assertion  retraction  graph  subject       predicate        object        datatype    annotation
1          0           graph  DOID:0060429  rdfs:subClassOf  DOID:0080014  _IRI        
1          0           graph  DOID:0080014  oio:id           DOID:0080014  xsd:string  
1          0           graph  DOID:0060388  rdfs:subClassOf  DOID:0080014  _IRI