assertion  retraction  graph  subject     predicate        object     datatype    annotation
1          0           graph  DOID:2529   oio:id           DOID:2529  xsd:string  
1          0           graph  DOID:10699  rdfs:subClassOf  DOID:2529  _IRI        
1          0           graph  DOID:672    rdfs:subClassOf  DOID:2529  _IRI        
1          0           graph  DOID:9146   rdfs:subClassOf  DOID:2529  _IRI