assertion  retraction  graph  subject       predicate        object        datatype    annotation
1          0           graph  DOID:0080012  oio:id           DOID:0080012  xsd:string  
1          0           graph  DOID:12259    rdfs:subClassOf  DOID:0080012  _IRI        
1          0           graph  DOID:12134    rdfs:subClassOf  DOID:0080012  _IRI        
1          0           graph  DOID:9169     rdfs:subClassOf  DOID:0080012  _IRI