assertion  retraction  graph  subject     predicate        object      datatype    annotation
1          0           graph  DOID:60008  rdfs:subClassOf  DOID:11201  _IRI        
1          0           graph  DOID:11201  oio:id           DOID:11201  xsd:string  
1          0           graph  DOID:1540   rdfs:subClassOf  DOID:11201  _IRI