assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:4947  rdfs:subClassOf  DOID:4896  _IRI        
1          0           graph  DOID:3698  rdfs:subClassOf  DOID:4896  _IRI        
1          0           graph  DOID:4896  oio:id           DOID:4896  xsd:string  
1          0           graph  DOID:4075  rdfs:subClassOf  DOID:4896  _IRI        
1          0           graph  DOID:7032  rdfs:subClassOf  DOID:4896  _IRI