assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:7602  rdfs:subClassOf  DOID:3376  _IRI        
1          0           graph  DOID:3376  oio:id           DOID:3376  xsd:string  
1          0           graph  DOID:3374  rdfs:subClassOf  DOID:3376  _IRI        
1          0           graph  DOID:7542  rdfs:subClassOf  DOID:3376  _IRI