assertion  retraction  graph  subject       predicate        object     datatype    annotation
1          0           graph  DOID:0080347  rdfs:subClassOf  DOID:5719  _IRI        
1          0           graph  DOID:5719     oio:id           DOID:5719  xsd:string  
1          0           graph  DOID:7379     rdfs:subClassOf  DOID:5719  _IRI