assertion  retraction  graph  subject       predicate        object        datatype    annotation
1          0           graph  DOID:0080619  oio:id           DOID:0080619  xsd:string  
1          0           graph  DOID:10203    rdfs:subClassOf  DOID:0080619  _IRI        
1          0           graph  DOID:6752     rdfs:subClassOf  DOID:0080619  _IRI        
1          0           graph  DOID:5387     rdfs:subClassOf  DOID:0080619  _IRI