assertion  retraction  graph  subject       predicate        object     datatype    annotation
1          0           graph  DOID:9173     rdfs:subClassOf  DOID:8850  _IRI        
1          0           graph  DOID:0050904  rdfs:subClassOf  DOID:8850  _IRI        
1          0           graph  DOID:5309     rdfs:subClassOf  DOID:8850  _IRI        
1          0           graph  DOID:8849     rdfs:subClassOf  DOID:8850  _IRI        
1          0           graph  DOID:297      rdfs:subClassOf  DOID:8850  _IRI        
1          0           graph  DOID:8850     oio:id           DOID:8850  xsd:string  
1          0           graph  DOID:9036     rdfs:subClassOf  DOID:8850  _IRI