assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:5392  rdfs:subClassOf  DOID:9500  _IRI        
1          0           graph  DOID:9538  rdfs:subClassOf  DOID:9500  _IRI        
1          0           graph  DOID:4542  rdfs:subClassOf  DOID:9500  _IRI        
1          0           graph  DOID:7146  rdfs:subClassOf  DOID:9500  _IRI        
1          0           graph  DOID:350   rdfs:subClassOf  DOID:9500  _IRI        
1          0           graph  DOID:9500  oio:id           DOID:9500  xsd:string