assertion  retraction  graph  subject    predicate    object                                                                                                   datatype    annotation
1          0           graph  DOID:3356  IAO:0000115  An osteosarcoma that is confined to a specific site without evidence of spread to other anatomic sites.  xsd:string  "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.cancer.org/cancer/types/osteosarcoma/detection-diagnosis-staging/staging.html""}]}"