assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:8593  rdfs:subClassOf  DOID:8527  _IRI        
1          0           graph  DOID:8527  oio:id           DOID:8527  xsd:string  
1          0           graph  DOID:8864  rdfs:subClassOf  DOID:8527  _IRI        
1          0           graph  DOID:8696  rdfs:subClassOf  DOID:8527  _IRI