assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:3918  oio:id           DOID:3918  xsd:string  
1          0           graph  DOID:3917  rdfs:subClassOf  DOID:3918  _IRI        
1          0           graph  DOID:7735  rdfs:subClassOf  DOID:3918  _IRI        
1          0           graph  DOID:5403  rdfs:subClassOf  DOID:3918  _IRI        
1          0           graph  DOID:3892  rdfs:subClassOf  DOID:3918  _IRI        
1          0           graph  DOID:7235  rdfs:subClassOf  DOID:3918  _IRI