assertion  retraction  graph  subject       predicate        object     datatype    annotation
1          0           graph  DOID:0060112  rdfs:subClassOf  DOID:1100  _IRI        
1          0           graph  DOID:10974    rdfs:subClassOf  DOID:1100  _IRI        
1          0           graph  DOID:1100     oio:id           DOID:1100  xsd:string  
1          0           graph  DOID:2394     rdfs:subClassOf  DOID:1100  _IRI