assertion  retraction  graph  subject       predicate        object     datatype    annotation
1          0           graph  DOID:2916     rdfs:subClassOf  DOID:2914  _IRI        
1          0           graph  DOID:2914     oio:id           DOID:2914  xsd:string  
1          0           graph  DOID:612      rdfs:subClassOf  DOID:2914  _IRI        
1          0           graph  DOID:0060083  rdfs:subClassOf  DOID:2914  _IRI        
1          0           graph  DOID:75       rdfs:subClassOf  DOID:2914  _IRI