assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:6947  rdfs:subClassOf  DOID:1350  _IRI        
1          0           graph  DOID:1358  rdfs:subClassOf  DOID:1350  _IRI        
1          0           graph  DOID:1364  rdfs:subClassOf  DOID:1350  _IRI        
1          0           graph  DOID:1361  rdfs:subClassOf  DOID:1350  _IRI        
1          0           graph  DOID:1350  oio:id           DOID:1350  xsd:string