assertion  retraction  graph  subject   predicate    object                                                    datatype    annotation
1          0           graph  DOID:732  IAO:0000115  A urinary system disease that is located_in the urethra.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007644""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://www.nlm.nih.gov/medlineplus/urethraldisorders.html""}]}"