assertion  retraction  graph  subject       predicate        object     datatype    annotation
1          0           graph  DOID:0081406  rdfs:subClassOf  DOID:3098  _IRI        
1          0           graph  DOID:0081249  rdfs:subClassOf  DOID:3098  _IRI        
1          0           graph  DOID:0081402  rdfs:subClassOf  DOID:3098  _IRI        
1          0           graph  DOID:6785     rdfs:subClassOf  DOID:3098  _IRI        
1          0           graph  DOID:3098     oio:id           DOID:3098  xsd:string