assertion  retraction  graph  subject    predicate        object    datatype    annotation
1          0           graph  DOID:4957  rdfs:subClassOf  DOID:264  _IRI        
1          0           graph  DOID:6209  rdfs:subClassOf  DOID:264  _IRI        
1          0           graph  DOID:264   oio:id           DOID:264  xsd:string  
1          0           graph  DOID:7731  rdfs:subClassOf  DOID:264  _IRI        
1          0           graph  DOID:6332  rdfs:subClassOf  DOID:264  _IRI        
1          0           graph  DOID:5373  rdfs:subClassOf  DOID:264  _IRI        
1          0           graph  DOID:6197  rdfs:subClassOf  DOID:264  _IRI