assertion  retraction  graph  subject       predicate        object        datatype    annotation
1          0           graph  DOID:0060085  rdfs:subClassOf  DOID:0060072  _IRI        
1          0           graph  DOID:0060084  rdfs:subClassOf  DOID:0060072  _IRI        
1          0           graph  DOID:0060072  oio:id           DOID:0060072  xsd:string