assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:9065  oio:id           DOID:9065  xsd:string  
1          0           graph  DOID:9146  rdfs:subClassOf  DOID:9065  _IRI        
1          0           graph  DOID:9155  rdfs:subClassOf  DOID:9065  _IRI        
1          0           graph  DOID:9111  rdfs:subClassOf  DOID:9065  _IRI