assertion  retraction  graph  subject    predicate            object                      datatype    annotation
1          0           graph  DOID:6901  rdfs:label           familiar ovarian carcinoma  xsd:string  
1          0           graph  DOID:6901  oio:inSubset         obo:doid#NCIthesaurus       _IRI        
1          0           graph  DOID:6901  oio:id               DOID:6901                   xsd:string  
1          0           graph  DOID:6901  oio:hasOBONamespace  disease_ontology            xsd:string  
1          0           graph  DOID:6901  oio:hasDbXref        UMLS_CUI:C1333992           xsd:string  
1          0           graph  DOID:6901  oio:hasDbXref        NCI:C36102                  xsd:string  
1          0           graph  DOID:6901  rdfs:subClassOf      DOID:2152                   _IRI        
1          0           graph  DOID:6901  rdf:type             owl:Class                   _IRI