assertion  retraction  graph  subject       predicate        object    datatype    annotation
1          0           graph  DOID:0050912  rdfs:subClassOf  DOID:235  _IRI        
1          0           graph  DOID:10657    rdfs:subClassOf  DOID:235  _IRI        
1          0           graph  DOID:1896     rdfs:subClassOf  DOID:235  _IRI        
1          0           graph  DOID:4118     rdfs:subClassOf  DOID:235  _IRI        
1          0           graph  DOID:235      oio:id           DOID:235  xsd:string