assertion  retraction  graph  subject       predicate        object     datatype    annotation
1          0           graph  DOID:1964     rdfs:subClassOf  DOID:1962  _IRI        
1          0           graph  DOID:0060111  rdfs:subClassOf  DOID:1962  _IRI        
1          0           graph  DOID:1962     oio:id           DOID:1962  xsd:string  
1          0           graph  DOID:5733     rdfs:subClassOf  DOID:1962  _IRI        
1          0           graph  DOID:7551     rdfs:subClassOf  DOID:1962  _IRI