assertion  retraction  graph  subject       predicate        object        datatype    annotation
1          0           graph  DOID:0080015  oio:id           DOID:0080015  xsd:string  
1          0           graph  DOID:8418     rdfs:subClassOf  DOID:0080015  _IRI        
1          0           graph  DOID:4773     rdfs:subClassOf  DOID:0080015  _IRI        
1          0           graph  DOID:8303     rdfs:subClassOf  DOID:0080015  _IRI        
1          0           graph  DOID:990      rdfs:subClassOf  DOID:0080015  _IRI