assertion  retraction  graph  subject     predicate        object     datatype    annotation
1          0           graph  DOID:2815   rdfs:subClassOf  DOID:5656  _IRI        
1          0           graph  DOID:3418   rdfs:subClassOf  DOID:5656  _IRI        
1          0           graph  DOID:12657  rdfs:subClassOf  DOID:5656  _IRI        
1          0           graph  DOID:5656   oio:id           DOID:5656  xsd:string  
1          0           graph  DOID:1891   rdfs:subClassOf  DOID:5656  _IRI        
1          0           graph  DOID:562    rdfs:subClassOf  DOID:5656  _IRI