assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:3308  oio:id           DOID:3308  xsd:string  
1          0           graph  DOID:7232  rdfs:subClassOf  DOID:3308  _IRI        
1          0           graph  DOID:5681  rdfs:subClassOf  DOID:3308  _IRI        
1          0           graph  DOID:5680  rdfs:subClassOf  DOID:3308  _IRI