assertion  retraction  graph  subject    predicate            object             datatype    annotation
1          0           graph  DOID:9459  rdfs:label           isthmus cancer     xsd:string  
1          0           graph  DOID:9459  oio:id               DOID:9459          xsd:string  
1          0           graph  DOID:9459  oio:hasOBONamespace  disease_ontology   xsd:string  
1          0           graph  DOID:9459  oio:hasDbXref        UMLS_CUI:C0153575  xsd:string  
1          0           graph  DOID:9459  oio:hasDbXref        ICD9CM:182.1       xsd:string  
1          0           graph  DOID:9459  rdfs:subClassOf      DOID:9460          _IRI        
1          0           graph  DOID:9459  rdf:type             owl:Class          _IRI