assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:7409  rdfs:subClassOf  DOID:2101  _IRI        
1          0           graph  DOID:7408  rdfs:subClassOf  DOID:2101  _IRI        
1          0           graph  DOID:2101  oio:id           DOID:2101  xsd:string  
1          0           graph  DOID:3740  rdfs:subClassOf  DOID:2101  _IRI        
1          0           graph  DOID:7048  rdfs:subClassOf  DOID:2101  _IRI        
1          0           graph  DOID:7363  rdfs:subClassOf  DOID:2101  _IRI