assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:8060  rdfs:subClassOf  DOID:1361  _IRI        
1          0           graph  DOID:1361  oio:id           DOID:1361  xsd:string  
1          0           graph  DOID:6054  rdfs:subClassOf  DOID:1361  _IRI