assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:8186  rdfs:subClassOf  DOID:1963  _IRI        
1          0           graph  DOID:3706  rdfs:subClassOf  DOID:1963  _IRI        
1          0           graph  DOID:1963  oio:id           DOID:1963  xsd:string  
1          0           graph  DOID:4008  rdfs:subClassOf  DOID:1963  _IRI        
1          0           graph  DOID:5540  rdfs:subClassOf  DOID:1963  _IRI        
1          0           graph  DOID:7266  rdfs:subClassOf  DOID:1963  _IRI