assertion  retraction  graph  subject    predicate    object                                                                                                                              datatype    annotation
1          0           graph  DOID:3025  IAO:0000115  A carcinoma that has_material_basis_in abnormally proliferating cells, derives_from spindle cells and/or derives_from giant cells.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007645""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://pubmed.ncbi.nlm.nih.gov/15215543/""}]}"