assertion  retraction  graph  subject     predicate        object     datatype    annotation
1          0           graph  DOID:12759  rdfs:subClassOf  DOID:3479  _IRI        
1          0           graph  DOID:3479   oio:id           DOID:3479  xsd:string  
1          0           graph  DOID:3478   rdfs:subClassOf  DOID:3479  _IRI        
1          0           graph  DOID:6039   rdfs:subClassOf  DOID:3479  _IRI