assertion  retraction  graph  subject       predicate        object        datatype    annotation
1          0           graph  DOID:8691     rdfs:subClassOf  DOID:0060061  _IRI        
1          0           graph  DOID:0081050  rdfs:subClassOf  DOID:0060061  _IRI        
1          0           graph  DOID:0060061  oio:id           DOID:0060061  xsd:string  
1          0           graph  DOID:8541     rdfs:subClassOf  DOID:0060061  _IRI