assertion  retraction  graph  subject    predicate            object                                                                                                                                                                                                     datatype    annotation
1          0           graph  DOID:6514  rdfs:label           polyvesicular vitelline pattern ovarian yolk sac tumor                                                                                                                                                     xsd:string  
1          0           graph  DOID:6514  oio:inSubset         obo:doid#NCIthesaurus                                                                                                                                                                                      _IRI        
1          0           graph  DOID:6514  oio:id               DOID:6514                                                                                                                                                                                                  xsd:string  
1          0           graph  DOID:6514  oio:hasOBONamespace  disease_ontology                                                                                                                                                                                           xsd:string  
1          0           graph  DOID:6514  oio:hasDbXref        UMLS_CUI:C1518749                                                                                                                                                                                          xsd:string  
1          0           graph  DOID:6514  oio:hasDbXref        NCI:C39987                                                                                                                                                                                                 xsd:string  
1          0           graph  DOID:6514  rdfs:subClassOf      DOID:5350                                                                                                                                                                                                  _IRI        
1          0           graph  DOID:6514  rdf:type             owl:Class                                                                                                                                                                                                  _IRI        
1          0           graph  DOID:6514  IAO:0000115          An ovarian endodermal sinus tumor that is characterized by a polyvesicular vitelline pattern, which involves vesicular structures with eccentric constrictions surrounded by a dense spindle cell stroma.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007637""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://www.pathologyoutlines.com/topic/ovarytumoryolksac.html""}]}"