assertion  retraction  graph  subject     predicate        object     datatype    annotation
1          0           graph  DOID:1529   oio:id           DOID:1529  xsd:string  
1          0           graph  DOID:11615  rdfs:subClassOf  DOID:1529  _IRI        
1          0           graph  DOID:11624  rdfs:subClassOf  DOID:1529  _IRI        
1          0           graph  DOID:8872   rdfs:subClassOf  DOID:1529  _IRI