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        <owl:someValuesFrom rdf:resource="#Transparency"/>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:ID="Speaker_lecture">
    <rdfs:subClassOf>
      <owl:Class rdf:ID="Session"/>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:about="#Conference_restaurant">
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Delegate"/>
        </owl:someValuesFrom>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_occupied_by"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Conference_state"/>
        </owl:someValuesFrom>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_situated_in"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Building"/>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Conference_city"/>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_situated_in"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:ID="Submissions_deadline">
    <rdfs:subClassOf rdf:resource="#Deadline"/>
  </owl:Class>
  <owl:Class rdf:ID="LCD_projector">
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Audiovisual_equipment"/>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:about="#Student_lecturer">
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Lecturer"/>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:ID="Fee_for_extra_trip">
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_paid_by"/>
        </owl:onProperty>
        <owl:someValuesFrom>
          <owl:Class rdf:ID="Conference_Hiker"/>
        </owl:someValuesFrom>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Fee"/>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_paid_for"/>
        </owl:onProperty>
        <owl:someValuesFrom rdf:resource="#Full_day_tour"/>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:about="#Departure">
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Activity_after_conference"/>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:ID="Plenary_lecture_speaker">
    <rdfs:subClassOf rdf:resource="#Author"/>
    <owl:equivalentClass>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#give"/>
        </owl:onProperty>
        <owl:someValuesFrom>
          <owl:Class rdf:ID="Tutorial"/>
        </owl:someValuesFrom>
      </owl:Restriction>
    </owl:equivalentClass>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Conference_hall"/>
        </owl:someValuesFrom>
        <owl:onProperty>
          <owl:ObjectProperty rdf:ID="speak_in"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:ID="Coffee_break">
    <rdfs:subClassOf rdf:resource="#Conference_activity"/>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Delegate"/>
        </owl:someValuesFrom>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_designed_for"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:ID="Mailing_list">
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Document"/>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Delegate"/>
        </owl:someValuesFrom>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_designed_for"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:ID="Registration">
    <rdfs:subClassOf rdf:resource="#Conference_activity"/>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_designed_for"/>
        </owl:onProperty>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Delegate"/>
        </owl:someValuesFrom>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:about="#Non_speaker">
    <owl:disjointWith>
      <owl:Class rdf:about="#Speaker"/>
    </owl:disjointWith>
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Delegate"/>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:about="#Research">
    <rdfs:subClassOf rdf:resource="#Activity_before_conference"/>
  </owl:Class>
  <owl:Class rdf:about="#Hotel_room">
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Conference_hotel"/>
        </owl:someValuesFrom>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_situated_in"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Hotel_presenter"/>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_designed_for"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Place"/>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:ID="Plenary_lecture">
    <rdfs:subClassOf rdf:resource="#Lecture"/>
    <owl:equivalentClass>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_given_by"/>
        </owl:onProperty>
        <owl:someValuesFrom rdf:resource="#Plenary_lecture_speaker"/>
      </owl:Restriction>
    </owl:equivalentClass>
  </owl:Class>
  <owl:Class>
    <owl:unionOf rdf:parseType="Collection">
      <owl:Class rdf:about="#Activity"/>
      <owl:Class rdf:about="#Money"/>
    </owl:unionOf>
  </owl:Class>
  <owl:Class rdf:about="#Place">
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_situated_in"/>
        </owl:onProperty>
        <owl:someValuesFrom rdf:resource="#Conference_city"/>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="http://www.w3.org/2002/07/owl#Thing"/>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Conference_state"/>
        </owl:someValuesFrom>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_situated_in"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:about="#Building">
    <rdfs:subClassOf rdf:resource="#Place"/>
  </owl:Class>
  <owl:Class rdf:ID="Receiving_manuscript">
    <rdfs:subClassOf rdf:resource="#Activity_before_conference"/>
  </owl:Class>
  <owl:Class rdf:ID="Invitation_letter">
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Document"/>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_designed_for"/>
        </owl:onProperty>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Delegate"/>
        </owl:someValuesFrom>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:ID="Sponsor_company_house">
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:ID="Sponsor_city"/>
        </owl:someValuesFrom>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_situated_in"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_situated_in"/>
        </owl:onProperty>
        <owl:someValuesFrom rdf:resource="#Sponsor_state"/>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:ID="Sponsor"/>
        </owl:someValuesFrom>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_occupied_by"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="#Building"/>
  </owl:Class>
  <owl:Class rdf:ID="Renting">
    <rdfs:subClassOf rdf:resource="#Activity_before_conference"/>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Car"/>
        <owl:onProperty>
          <owl:ObjectProperty rdf:ID="is_connected_with"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:ID="Author_attendee_cd_registration_fee">
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_paid_for"/>
        </owl:onProperty>
        <owl:someValuesFrom rdf:resource="#Cd_proceening"/>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Registration_fee"/>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:ID="Tutorial_speaker">
    <owl:equivalentClass>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Plenary_lecture"/>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#give"/>
        </owl:onProperty>
      </owl:Restriction>
    </owl:equivalentClass>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#speak_in"/>
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        <owl:someValuesFrom>
          <owl:Class rdf:about="#Conference_hall"/>
        </owl:someValuesFrom>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="#Author"/>
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  <owl:Class>
    <owl:unionOf rdf:parseType="Collection">
      <owl:Class rdf:about="#Item"/>
      <owl:Class rdf:about="#Place"/>
    </owl:unionOf>
  </owl:Class>
  <owl:Class rdf:ID="Card">
    <rdfs:subClassOf rdf:resource="#Item"/>
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  <owl:Class rdf:about="#Session_room">
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Audiovisual_equipment"/>
        </owl:someValuesFrom>
        <owl:onProperty>
          <owl:ObjectProperty rdf:ID="is_equipped_by"/>
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    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_situated_in"/>
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        <owl:someValuesFrom>
          <owl:Class rdf:ID="Conference_building"/>
        </owl:someValuesFrom>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="#Place"/>
  </owl:Class>
  <owl:Class rdf:ID="Initial_manuscipt">
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Refusing_manuscript"/>
        <owl:onProperty>
          <owl:ObjectProperty rdf:ID="go_through"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Class rdf:ID="Submission"/>
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  </owl:Class>
  <owl:Class rdf:ID="Van">
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Transport_vehicle"/>
    </rdfs:subClassOf>
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  <owl:Class rdf:about="#IASTED_non_member">
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Delegate"/>
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    <owl:equivalentClass>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Nonmember_registration_fee"/>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#pay"/>
        </owl:onProperty>
      </owl:Restriction>
    </owl:equivalentClass>
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  <owl:Class rdf:about="#Payment_document">
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class>
            <owl:unionOf rdf:parseType="Collection">
              <owl:Class rdf:about="#Fee"/>
              <owl:Class rdf:about="#Tax"/>
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          </owl:Class>
        </owl:someValuesFrom>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_designed_for"/>
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    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Document"/>
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    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Sponsor_state"/>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#occupy"/>
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      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Sponsor_city"/>
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        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#occupy"/>
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      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#occupy"/>
        </owl:onProperty>
        <owl:someValuesFrom rdf:resource="#Sponsor_company_house"/>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="#Person"/>
    <owl:equivalentClass>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#give"/>
        </owl:onProperty>
        <owl:someValuesFrom>
          <owl:Class rdf:ID="Sponzorship"/>
        </owl:someValuesFrom>
      </owl:Restriction>
    </owl:equivalentClass>
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  <owl:Class>
    <owl:unionOf rdf:parseType="Collection">
      <owl:Class rdf:about="#Place"/>
      <owl:Class rdf:about="#Time"/>
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  </owl:Class>
  <owl:Class rdf:ID="Currency"/>
  <owl:Class rdf:ID="Session_chair">
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Delegate"/>
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    <owl:equivalentClass>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#go_through"/>
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        <owl:someValuesFrom rdf:resource="#Introduction_of_speaker"/>
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    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Brief_introduction_for_Session_chair"/>
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        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#obtain"/>
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      </owl:Restriction>
    </rdfs:subClassOf>
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  <owl:Class rdf:ID="Coctail_reception">
    <rdfs:subClassOf rdf:resource="#Conference_activity"/>
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      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Delegate"/>
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        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_designed_for"/>
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      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Delegate"/>
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          <owl:ObjectProperty rdf:about="#is_designed_for"/>
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    <rdfs:subClassOf rdf:resource="#Time"/>
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  <owl:Class rdf:about="#Conference_hall">
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      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_situated_in"/>
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          <owl:Class rdf:about="#Conference_building"/>
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    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="#Place"/>
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  <owl:Class rdf:about="#Lecturer">
    <rdfs:subClassOf rdf:resource="#Author"/>
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      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#give"/>
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        <owl:someValuesFrom>
          <owl:Class rdf:about="#Session"/>
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    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Session_room"/>
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          <owl:ObjectProperty rdf:about="#speak_in"/>
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  <owl:Class rdf:ID="Author_information_form">
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Deadline_for_notification_of_acceptance"/>
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          <owl:ObjectProperty rdf:ID="is_sent_after"/>
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    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="#Form"/>
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    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:ID="is_used_by"/>
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        <owl:someValuesFrom>
          <owl:Class rdf:about="#Delegate"/>
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    </rdfs:subClassOf>
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      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_situated_in"/>
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        <owl:someValuesFrom rdf:resource="#Conference_city"/>
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    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="#Building"/>
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      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_designed_for"/>
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        <owl:someValuesFrom rdf:resource="#Hotel_presenter"/>
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    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Conference_state"/>
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        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_situated_in"/>
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        <owl:someValuesFrom rdf:resource="#Session_chair"/>
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          <owl:ObjectProperty rdf:about="#is_given_to"/>
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      <owl:Class rdf:about="#Document"/>
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        <owl:someValuesFrom rdf:resource="#Author"/>
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  <owl:Class rdf:about="#Delegate">
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      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Registration_form"/>
        <owl:onProperty>
          <owl:ObjectProperty rdf:ID="send"/>
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    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Invitation_letter"/>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#obtain"/>
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    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#pay"/>
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        <owl:someValuesFrom>
          <owl:Class rdf:about="#Registration_fee"/>
        </owl:someValuesFrom>
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    </rdfs:subClassOf>
    <owl:equivalentClass>
      <owl:Class>
        <owl:intersectionOf rdf:parseType="Collection">
          <owl:Restriction>
            <owl:someValuesFrom rdf:resource="#Registration"/>
            <owl:onProperty>
              <owl:ObjectProperty rdf:about="#go_through"/>
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          <owl:Restriction>
            <owl:onProperty>
              <owl:ObjectProperty rdf:about="#is_present_in"/>
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            <owl:someValuesFrom rdf:resource="#Conference_days"/>
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          <owl:Restriction>
            <owl:someValuesFrom>
              <owl:Class rdf:about="#Conference_building"/>
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            <owl:onProperty>
              <owl:ObjectProperty rdf:about="#is_present_in"/>
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      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#occupy"/>
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        <owl:someValuesFrom>
          <owl:Class rdf:about="#Presenter_city"/>
        </owl:someValuesFrom>
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    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:ID="Viza"/>
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        <owl:onProperty>
          <owl:ObjectProperty rdf:ID="need"/>
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      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="#Person"/>
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      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#occupy"/>
        </owl:onProperty>
        <owl:someValuesFrom>
          <owl:Class rdf:ID="Presenter_house"/>
        </owl:someValuesFrom>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Presenter_state"/>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#occupy"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:ID="Credit_card">
    <rdfs:subClassOf rdf:resource="#Card"/>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_designed_for"/>
        </owl:onProperty>
        <owl:someValuesFrom>
          <owl:Class>
            <owl:unionOf rdf:parseType="Collection">
              <owl:Class rdf:about="#Fee"/>
              <owl:Class rdf:about="#Sponzorship"/>
              <owl:Class rdf:about="#Tax"/>
            </owl:unionOf>
          </owl:Class>
        </owl:someValuesFrom>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:about="#Sponsor_city">
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Sponsor"/>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_occupied_by"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="#City"/>
  </owl:Class>
  <owl:Class rdf:about="#Registration_fee">
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Fee"/>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_paid_by"/>
        </owl:onProperty>
        <owl:someValuesFrom rdf:resource="#Delegate"/>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Conference_activity"/>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_paid_for"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:about="#Sponzorship">
    <rdfs:subClassOf rdf:resource="#Money"/>
    <owl:equivalentClass>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_paid_by"/>
        </owl:onProperty>
        <owl:someValuesFrom rdf:resource="#Sponsor"/>
      </owl:Restriction>
    </owl:equivalentClass>
  </owl:Class>
  <owl:Class rdf:ID="Review">
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Document"/>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:ID="Reviewer"/>
        </owl:someValuesFrom>
        <owl:onProperty>
          <owl:ObjectProperty rdf:ID="is_writen_by"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:ID="Camera_ready_manuscript_deadline">
    <rdfs:subClassOf rdf:resource="#Deadline"/>
  </owl:Class>
  <owl:Class rdf:about="#Presenter_house">
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Presenter_city"/>
        </owl:someValuesFrom>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_situated_in"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Delegate"/>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_occupied_by"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_situated_in"/>
        </owl:onProperty>
        <owl:someValuesFrom rdf:resource="#Presenter_state"/>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="#Building"/>
  </owl:Class>
  <owl:Class rdf:about="#Submission">
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Document"/>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_writen_by"/>
        </owl:onProperty>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Speaker"/>
        </owl:someValuesFrom>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class>
    <owl:unionOf rdf:parseType="Collection">
      <owl:Class rdf:about="#State"/>
      <owl:Class rdf:about="#Building"/>
      <owl:Class rdf:about="#City"/>
      <owl:Class rdf:about="#Place"/>
    </owl:unionOf>
  </owl:Class>
  <owl:Class rdf:ID="Dinner_banquet">
    <rdfs:subClassOf rdf:resource="#Social_program"/>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_designed_for"/>
        </owl:onProperty>
        <owl:someValuesFrom>
          <owl:Class>
            <owl:complementOf rdf:resource="#One_day_presenter"/>
          </owl:Class>
        </owl:someValuesFrom>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:about="#Conference_building">
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Conference_city"/>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_situated_in"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_occupied_by"/>
        </owl:onProperty>
        <owl:someValuesFrom rdf:resource="#Delegate"/>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Conference_state"/>
        </owl:someValuesFrom>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_situated_in"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="#Building"/>
  </owl:Class>
  <owl:Class rdf:ID="Computer">
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Audiovisual_equipment"/>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:about="#Speaker">
    <owl:disjointWith rdf:resource="#Non_speaker"/>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Lecture"/>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#give"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="#Delegate"/>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Final_manuscript"/>
        </owl:someValuesFrom>
        <owl:onProperty>
          <owl:ObjectProperty rdf:ID="write"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:about="#Conference_state">
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_visited_by"/>
        </owl:onProperty>
        <owl:someValuesFrom rdf:resource="#Delegate"/>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="#State"/>
  </owl:Class>
  <owl:Class rdf:about="#Activity_after_conference">
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Conference_days"/>
        <owl:onProperty>
          <owl:ObjectProperty rdf:ID="is_held_after"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="#Activity"/>
  </owl:Class>
  <owl:Class rdf:ID="Conference_airport">
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_situated_in"/>
        </owl:onProperty>
        <owl:someValuesFrom rdf:resource="#Conference_city"/>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_situated_in"/>
        </owl:onProperty>
        <owl:someValuesFrom rdf:resource="#Conference_state"/>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="#Building"/>
  </owl:Class>
  <owl:Class>
    <owl:unionOf rdf:parseType="Collection">
      <owl:Class rdf:about="#Place"/>
      <owl:Class rdf:about="#Time"/>
    </owl:unionOf>
  </owl:Class>
  <owl:Class rdf:about="#Trip_city">
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom>
          <owl:Class rdf:about="#Conference_Hiker"/>
        </owl:someValuesFrom>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_visited_by"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="#City"/>
  </owl:Class>
  <owl:Class rdf:about="#Session">
    <rdfs:subClassOf rdf:resource="#Lecture"/>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Session_room"/>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_held_in"/>
        </owl:onProperty>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_given_by"/>
        </owl:onProperty>
        <owl:someValuesFrom>
          <owl:Class>
            <owl:unionOf rdf:parseType="Collection">
              <owl:Class rdf:about="#Author"/>
              <owl:Class rdf:about="#Session_chair"/>
            </owl:unionOf>
          </owl:Class>
        </owl:someValuesFrom>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:about="#Introduction">
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  </owl:Class>
  <owl:Class rdf:about="#Reviewer">
    <owl:equivalentClass>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#give"/>
        </owl:onProperty>
        <owl:someValuesFrom rdf:resource="#Review"/>
      </owl:Restriction>
    </owl:equivalentClass>
    <rdfs:subClassOf rdf:resource="#Speaker"/>
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  <owl:Class rdf:ID="Welcome_address">
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      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Delegate"/>
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          <owl:ObjectProperty rdf:ID="is_needed_for"/>
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    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Document"/>
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  <owl:Class rdf:about="#Technical_commitee">
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      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#go_through"/>
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        <owl:someValuesFrom rdf:resource="#Technic_activity"/>
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    </rdfs:subClassOf>
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    <owl:unionOf rdf:parseType="Collection">
      <owl:Class rdf:about="#Place"/>
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    </owl:unionOf>
  </owl:Class>
  <owl:Class rdf:ID="PowerPoint_presentation">
    <rdfs:subClassOf rdf:resource="#Presentation"/>
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    <rdfs:subClassOf rdf:resource="#Research"/>
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      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Delegate"/>
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          <owl:ObjectProperty rdf:about="#is_occupied_by"/>
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      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>
  <owl:Class rdf:about="#Deadline_hotel_reservation">
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      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Full_day_tour"/>
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          <owl:ObjectProperty rdf:about="#go_through"/>
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      </owl:Restriction>
    </owl:equivalentClass>
    <rdfs:subClassOf rdf:resource="#Delegate"/>
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  <owl:Class rdf:about="#Final_manuscript">
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      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Accepting_manuscript"/>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#go_through"/>
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        <owl:someValuesFrom rdf:resource="#Session_room"/>
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          <owl:ObjectProperty rdf:about="#is_situated_in"/>
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    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:ID="is_signed_by"/>
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        <owl:someValuesFrom rdf:resource="#Listener"/>
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    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Class rdf:about="#Document"/>
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  </owl:Class>
  <owl:Class rdf:ID="Author_book_proceedings_included">
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      <owl:Restriction>
        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#obtain"/>
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        <owl:someValuesFrom rdf:resource="#Book_proceeding"/>
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    </rdfs:subClassOf>
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        <owl:someValuesFrom>
          <owl:Class>
            <owl:unionOf rdf:parseType="Collection">
              <owl:Class rdf:about="#Credit_card"/>
              <owl:Class rdf:about="#Payment_document"/>
            </owl:unionOf>
          </owl:Class>
        </owl:someValuesFrom>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="#Money"/>
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        <owl:someValuesFrom rdf:resource="#Session_room"/>
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    <rdfs:subClassOf>
      <owl:Restriction>
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    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:someValuesFrom rdf:resource="#Speaker"/>
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          <owl:ObjectProperty rdf:about="#is_used_by"/>
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  <owl:Class rdf:about="#Tutorial">
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        <owl:onProperty>
          <owl:ObjectProperty rdf:about="#is_given_by"/>
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        <owl:someValuesFrom rdf:resource="#Tutorial_speaker"/>
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    </owl:equivalentClass>
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      <owl:ObjectProperty rdf:about="#is_sent_by"/>
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    <rdfs:domain rdf:resource="#Person"/>
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      <owl:ObjectProperty rdf:about="#is_occupied_by"/>
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          <owl:Class rdf:about="#City"/>
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      <owl:ObjectProperty rdf:about="#is_prepared_by"/>
    </owl:inverseOf>
    <rdfs:domain rdf:resource="#Person"/>
  </owl:ObjectProperty>
  <owl:ObjectProperty rdf:about="#is_used_by">
    <rdfs:range rdf:resource="#Person"/>
    <rdfs:domain rdf:resource="#Item"/>
  </owl:ObjectProperty>
  <owl:ObjectProperty rdf:about="#is_visited_by">
    <rdfs:domain>
      <owl:Class>
        <owl:unionOf rdf:parseType="Collection">
          <owl:Class rdf:about="#State"/>
          <owl:Class rdf:about="#City"/>
          <owl:Class rdf:about="#Building"/>
        </owl:unionOf>
      </owl:Class>
    </rdfs:domain>
    <rdfs:range rdf:resource="#Person"/>
  </owl:ObjectProperty>
  <owl:ObjectProperty rdf:about="#is_present">
    <rdfs:domain rdf:resource="#Person"/>
    <rdfs:range rdf:resource="#Time"/>
  </owl:ObjectProperty>
  <owl:ObjectProperty rdf:about="#obtain">
    <rdfs:range rdf:resource="#Item"/>
    <rdfs:domain rdf:resource="#Person"/>
  </owl:ObjectProperty>
  <owl:ObjectProperty rdf:about="#is_paid_in">
    <rdfs:domain rdf:resource="#Money"/>
    <rdfs:range rdf:resource="#Building"/>
  </owl:ObjectProperty>
  <owl:ObjectProperty rdf:about="#is_present_in">
    <rdfs:range>
      <owl:Class>
        <owl:unionOf rdf:parseType="Collection">
          <owl:Class rdf:about="#Time"/>
          <owl:Class rdf:about="#Place"/>
        </owl:unionOf>
      </owl:Class>
    </rdfs:range>
    <rdfs:domain rdf:resource="#Person"/>
  </owl:ObjectProperty>
  <owl:ObjectProperty rdf:about="#is_sent_before">
    <rdfs:domain rdf:resource="#Item"/>
    <rdfs:range rdf:resource="#Time"/>
  </owl:ObjectProperty>
  <owl:ObjectProperty rdf:about="#speak_in">
    <rdfs:range>
      <owl:Class>
        <owl:unionOf rdf:parseType="Collection">
          <owl:Class rdf:about="#Place"/>
          <owl:Class rdf:about="#Time"/>
        </owl:unionOf>
      </owl:Class>
    </rdfs:range>
    <rdfs:domain rdf:resource="#Person"/>
  </owl:ObjectProperty>
  <owl:ObjectProperty rdf:about="#is_signed_by">
    <rdfs:range rdf:resource="#Person"/>
    <rdfs:domain rdf:resource="#Item"/>
    <owl:inverseOf rdf:resource="#sign"/>
  </owl:ObjectProperty>
  <owl:ObjectProperty rdf:about="#need">
    <rdfs:domain rdf:resource="#Person"/>
    <rdfs:range rdf:resource="#Item"/>
    <owl:inverseOf rdf:resource="#is_needed_for"/>
  </owl:ObjectProperty>
  <owl:ObjectProperty rdf:about="#is_connected_with">
    <rdfs:range>
      <owl:Class>
        <owl:unionOf rdf:parseType="Collection">
          <owl:Class rdf:about="#Item"/>
          <owl:Class rdf:about="#Place"/>
        </owl:unionOf>
      </owl:Class>
    </rdfs:range>
    <rdfs:domain>
      <owl:Class>
        <owl:unionOf rdf:parseType="Collection">
          <owl:Class rdf:about="#Activity"/>
          <owl:Class rdf:about="#Person"/>
        </owl:unionOf>
      </owl:Class>
    </rdfs:domain>
  </owl:ObjectProperty>
  <owl:ObjectProperty rdf:about="#is_occupied_by">
    <rdfs:domain>
      <owl:Class>
        <owl:unionOf rdf:parseType="Collection">
          <owl:Class rdf:about="#Building"/>
          <owl:Class rdf:about="#State"/>
          <owl:Class rdf:about="#City"/>
        </owl:unionOf>
      </owl:Class>
    </rdfs:domain>
    <owl:inverseOf rdf:resource="#occupy"/>
    <rdfs:range rdf:resource="#Person"/>
  </owl:ObjectProperty>
  <owl:ObjectProperty rdf:about="#go_through">
    <rdfs:domain rdf:resource="#Item"/>
    <rdfs:range rdf:resource="#Activity"/>
  </owl:ObjectProperty>
  <owl:ObjectProperty rdf:about="#is_given_by">
    <owl:inverseOf rdf:resource="#give"/>
    <rdfs:range rdf:resource="#Person"/>
    <rdfs:domain>
      <owl:Class>
        <owl:unionOf rdf:parseType="Collection">
          <owl:Class rdf:about="#Item"/>
          <owl:Class rdf:about="#Activity"/>
        </owl:unionOf>
      </owl:Class>
    </rdfs:domain>
  </owl:ObjectProperty>
  <owl:ObjectProperty rdf:about="#is_given_to">
    <rdfs:range rdf:resource="#Person"/>
    <rdfs:domain rdf:resource="#Item"/>
  </owl:ObjectProperty>
  <owl:ObjectProperty rdf:about="#is_paid_with">
    <rdfs:range rdf:resource="#Item"/>
    <rdfs:domain rdf:resource="#Money"/>
  </owl:ObjectProperty>
  <owl:ObjectProperty rdf:about="#is_prepared_by">
    <rdfs:domain rdf:resource="#Item"/>
    <owl:inverseOf rdf:resource="#prepare"/>
    <rdfs:range rdf:resource="#Person"/>
  </owl:ObjectProperty>
  <owl:DatatypeProperty rdf:ID="done_till">
    <rdfs:domain rdf:resource="#Deadline"/>
    <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#date"/>
  </owl:DatatypeProperty>
  <owl:DatatypeProperty rdf:ID="has_amount_of">
    <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#int"/>
    <rdfs:domain rdf:resource="#Money"/>
  </owl:DatatypeProperty>
  <owl:DatatypeProperty rdf:ID="is_dated_on">
    <rdfs:domain rdf:resource="#Activity"/>
    <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#dateTime"/>
  </owl:DatatypeProperty>
  <Conference_city rdf:ID="Cancun"/>
  <Trip_city rdf:ID="Chichen_Itza"/>
  <Currency rdf:ID="peso"/>
  <Conference_state rdf:ID="Mexico"/>
</rdf:RDF>