assertion  retraction  graph  subject       predicate        object        datatype    annotation
1          0           graph  DOID:0080808  rdfs:subClassOf  DOID:0050904  _IRI        
1          0           graph  DOID:0050904  oio:id           DOID:0050904  xsd:string  
1          0           graph  DOID:0080800  rdfs:subClassOf  DOID:0050904  _IRI        
1          0           graph  DOID:4866     rdfs:subClassOf  DOID:0050904  _IRI        
1          0           graph  DOID:0081293  rdfs:subClassOf  DOID:0050904  _IRI