assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:7140  rdfs:subClassOf  DOID:3999  _IRI        
1          0           graph  DOID:4879  rdfs:subClassOf  DOID:3999  _IRI        
1          0           graph  DOID:3999  oio:id           DOID:3999  xsd:string  
1          0           graph  DOID:3998  rdfs:subClassOf  DOID:3999  _IRI        
1          0           graph  DOID:6316  rdfs:subClassOf  DOID:3999  _IRI        
1          0           graph  DOID:6961  rdfs:subClassOf  DOID:3999  _IRI        
1          0           graph  DOID:5630  rdfs:subClassOf  DOID:3999  _IRI