assertion  retraction  graph  subject    predicate    object                                                                            datatype    annotation
1          0           graph  DOID:3178  IAO:0000115  A skin benign neoplasm that is composed of epithelial cells and a fibrous stalk.  xsd:string  "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/books/NBK560737/""}]}"