assertion  retraction  graph  subject     predicate        object     datatype    annotation
1          0           graph  DOID:10661  rdfs:subClassOf  DOID:4691  _IRI        
1          0           graph  DOID:10660  rdfs:subClassOf  DOID:4691  _IRI        
1          0           graph  DOID:12064  rdfs:subClassOf  DOID:4691  _IRI        
1          0           graph  DOID:4691   oio:id           DOID:4691  xsd:string  
1          0           graph  DOID:4690   rdfs:subClassOf  DOID:4691  _IRI