assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:5716  oio:id           DOID:5716  xsd:string  
1          0           graph  DOID:6256  rdfs:subClassOf  DOID:5716  _IRI        
1          0           graph  DOID:6276  rdfs:subClassOf  DOID:5716  _IRI        
1          0           graph  DOID:6274  rdfs:subClassOf  DOID:5716  _IRI