assertion  retraction  graph  subject    predicate    object                                                                                                                                               datatype    annotation
1          0           graph  DOID:3737  IAO:0000115  A squamous cell carcinoma that is a diffuse, papillary, non metastasizing, well differentiated, malignant neoplasm of epidermis or oral epithelium.  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/Verrucous_carcinoma""}]}"