assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:4769  rdfs:subClassOf  DOID:4765  _IRI        
1          0           graph  DOID:4768  rdfs:subClassOf  DOID:4765  _IRI        
1          0           graph  DOID:4767  rdfs:subClassOf  DOID:4765  _IRI        
1          0           graph  DOID:4765  oio:id           DOID:4765  xsd:string