assertion  retraction  graph  subject     predicate        object      datatype    annotation
1          0           graph  DOID:10316  oio:id           DOID:10316  xsd:string  
1          0           graph  DOID:10325  rdfs:subClassOf  DOID:10316  _IRI        
1          0           graph  DOID:10322  rdfs:subClassOf  DOID:10316  _IRI