assertion  retraction  graph  subject     predicate    object                                                                                                                                                 datatype    annotation
1          0           graph  DOID:10044  IAO:0000115  A skin melanoma that is characterized by the presence of nodules which contain large melanoma cells with clear, foamy or finely vacuolated cytoplasm.  xsd:string  "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://pubmed.ncbi.nlm.nih.gov/27984232/""}]}"