assertion  retraction  graph  subject       predicate        object     datatype    annotation
1          0           graph  DOID:0050269  rdfs:subClassOf  DOID:2253  _IRI        
1          0           graph  DOID:0060110  rdfs:subClassOf  DOID:2253  _IRI        
1          0           graph  DOID:2253     oio:id           DOID:2253  xsd:string  
1          0           graph  DOID:4362     rdfs:subClassOf  DOID:2253  _IRI        
1          0           graph  DOID:8991     rdfs:subClassOf  DOID:2253  _IRI