assertion  retraction  graph  subject    predicate            object                      datatype    annotation
1          0           graph  DOID:4465  oio:hasDbXref        NCI:C6975                   xsd:string  
1          0           graph  DOID:4465  oio:hasExactSynonym  papillary kidney carcinoma  @en         
1          0           graph  DOID:4465  oio:hasOBONamespace  disease_ontology            xsd:string