assertion  retraction  graph  subject   predicate    object                                              datatype    annotation
1          0           graph  DOID:780  IAO:0000115  A uterine disease that is located_in the placenta.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007638""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://en.wikipedia.org/wiki/Placenta_disease""}]}"