assertion  retraction  graph  subject       predicate        object        datatype    annotation
1          0           graph  DOID:0060115  oio:id           DOID:0060115  xsd:string  
1          0           graph  DOID:0060096  rdfs:subClassOf  DOID:0060115  _IRI        
1          0           graph  DOID:2001     rdfs:subClassOf  DOID:0060115  _IRI        
1          0           graph  DOID:0060090  rdfs:subClassOf  DOID:0060115  _IRI