assertion  retraction  graph  subject    predicate    object                                                                                                                                                                                                                                                                                       datatype    annotation
1          0           graph  DOID:4385  IAO:0000115  A squamous cell carcinoma that has papillae, which are characterized either by narrow fibrovascular cores that superficially resemble papillary carcinoma of the urinary tract or by broad cores that contain edematous fibrous stroma with prominent capillaries and stromal inflammation.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007645""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://www.sciencedirect.com/science/article/pii/S0090825803003299""}]}"