assertion  retraction  graph  subject    predicate        object     datatype  annotation
1          0           graph  DOID:4283  rdfs:subClassOf  DOID:2513  _IRI      
1          0           graph  DOID:5063  rdfs:subClassOf  DOID:2513  _IRI      
1          0           graph  DOID:4293  rdfs:subClassOf  DOID:2513  _IRI      
1          0           graph  DOID:4282  rdfs:subClassOf  DOID:2513  _IRI