assertion  retraction  graph  subject       predicate        object   datatype    annotation
1          0           graph  DOID:3918     rdfs:subClassOf  DOID:26  _IRI        
1          0           graph  DOID:13768    rdfs:subClassOf  DOID:26  _IRI        
1          0           graph  DOID:26       oio:id           DOID:26  xsd:string  
1          0           graph  DOID:1793     rdfs:subClassOf  DOID:26  _IRI        
1          0           graph  DOID:0040091  rdfs:subClassOf  DOID:26  _IRI