assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:6917  rdfs:subClassOf  DOID:3282  _IRI        
1          0           graph  DOID:7926  rdfs:subClassOf  DOID:3282  _IRI        
1          0           graph  DOID:6530  rdfs:subClassOf  DOID:3282  _IRI        
1          0           graph  DOID:3282  oio:id           DOID:3282  xsd:string