assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:4905  oio:id           DOID:4905  xsd:string  
1          0           graph  DOID:6827  rdfs:subClassOf  DOID:4905  _IRI        
1          0           graph  DOID:7717  rdfs:subClassOf  DOID:4905  _IRI        
1          0           graph  DOID:6823  rdfs:subClassOf  DOID:4905  _IRI        
1          0           graph  DOID:3587  rdfs:subClassOf  DOID:4905  _IRI        
1          0           graph  DOID:4074  rdfs:subClassOf  DOID:4905  _IRI