assertion  retraction  graph  subject       predicate        object        datatype    annotation
1          0           graph  DOID:0080617  rdfs:subClassOf  DOID:0060092  _IRI        
1          0           graph  DOID:4419     rdfs:subClassOf  DOID:0060092  _IRI        
1          0           graph  DOID:1975     rdfs:subClassOf  DOID:0060092  _IRI        
1          0           graph  DOID:0060092  oio:id           DOID:0060092  xsd:string