assertion  retraction  graph  subject     predicate        object     datatype    annotation
1          0           graph  DOID:4606   oio:id           DOID:4606  xsd:string  
1          0           graph  DOID:5624   rdfs:subClassOf  DOID:4606  _IRI        
1          0           graph  DOID:4897   rdfs:subClassOf  DOID:4606  _IRI        
1          0           graph  DOID:3254   rdfs:subClassOf  DOID:4606  _IRI        
1          0           graph  DOID:10020  rdfs:subClassOf  DOID:4606  _IRI        
1          0           graph  DOID:4681   rdfs:subClassOf  DOID:4606  _IRI        
1          0           graph  DOID:4064   rdfs:subClassOf  DOID:4606  _IRI