assertion  retraction  graph  subject    predicate        object     datatype  annotation
1          0           graph  DOID:8687  rdfs:subClassOf  DOID:8719  _IRI      
1          0           graph  DOID:9138  rdfs:subClassOf  DOID:8719  _IRI      
1          0           graph  DOID:8872  rdfs:subClassOf  DOID:8719  _IRI      
1          0           graph  DOID:9234  rdfs:subClassOf  DOID:8719  _IRI      
1          0           graph  DOID:9024  rdfs:subClassOf  DOID:8719  _IRI      
1          0           graph  DOID:8792  rdfs:subClassOf  DOID:8719  _IRI