assertion  retraction  graph  subject       predicate        object      datatype    annotation
1          0           graph  DOID:0050201  rdfs:subClassOf  DOID:11266  _IRI        
1          0           graph  DOID:11266    oio:id           DOID:11266  xsd:string  
1          0           graph  DOID:0040086  rdfs:subClassOf  DOID:11266  _IRI