assertion  retraction  graph  subject       predicate        object     datatype    annotation
1          0           graph  DOID:0080896  rdfs:subClassOf  DOID:3316  _IRI        
1          0           graph  DOID:3316     oio:id           DOID:3316  xsd:string  
1          0           graph  DOID:2643     rdfs:subClassOf  DOID:3316  _IRI        
1          0           graph  DOID:3850     rdfs:subClassOf  DOID:3316  _IRI