document
  prefix s <http://schema.org/>
  prefix ex <http://example.com/>
  
  entity(ex:beginning_of_WWI, [s:year="1914"])
  entity(ex:support_from_germany)
  entity(ex:TripleAllianceAgreement, [s:year="1882"])
  wasAttributedTo(ex:support_from_germany, ex:Germany)
  used(ex:declares_wars_onTripleEntente, ex:support_from_germany, -)
  wasDerivedFrom(ex:support_from_germany, ex:TripleAllianceAgreement, -, -, -)
  wasAssociatedWith(ex:send_message, ex:AustriaHungary, -)
  wasAssociatedWith(ex:assassinate_Ferdinand, ex:Ferdinand, -)
  wasAssociatedWith(ex:send_message, ex:Germany, -)
  wasInformedBy(ex:declares_wars_onTripleEntente, ex:declares_wars_onSerbia)
  wasInformedBy(ex:declares_wars_onSerbia, ex:send_message)
  wasInformedBy(ex:send_message, ex:assassinate_Ferdinand)
  wasInformedBy(ex:assassinate_Ferdinand, ex:inspect_annexation)
  activity(ex:assassinate_Ferdinand, -, -)
  activity(ex:declares_wars_onSerbia, -, -)
  activity(ex:declares_wars_onTripleEntente, -, -)
  activity(ex:inspect_annexation, -, -)
  activity(ex:send_message, -, -)
  actedOnBehalfOf(ex:Princip, ex:Serbia, ex:assassinate_Ferdinand)
  actedOnBehalfOf(ex:Ferdinand, ex:AustriaHungary, ex:inspect_annexation)
  wasGeneratedBy(ex:beginning_of_WWI, ex:declares_wars_onTripleEntente, -)
  agent(ex:AustriaHungary, [prov:type='prov:Country'])
  agent(ex:Serbia, [prov:type='prov:Country'])
  agent(ex:Princip, [s:Fullname="Gavrilo Princip", s:Nationality="Serbia", prov:type='prov:Person'])
  agent(ex:Ferdinand, [s:Fullname="Archduke Franz Ferdinand", s:Nationality="Austro-Hungarian Empire", prov:type='prov:Person'])
  agent(ex:Germany, [prov:type='prov:Country'])
endDocument