assertion  retraction  graph  subject    predicate    object                                                                                                          datatype    annotation
1          0           graph  DOID:4152  IAO:0000115  A chordoma that histologically derives_from chordoma, derives_from chondroma, and derives_from chondrosarcoma.  xsd:string  "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://www.ajnr.org/ajnr-case-collections-diagnosis/chondroid-chordoma""},{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://my.clevelandclinic.org/health/diseases/17916-chordoma""},{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6263615/""}]}"