assertion  retraction  graph  subject    predicate    object                                         datatype    annotation
1          0           graph  DOID:4151  IAO:0000115  A chordoma that is located_in the skull base.  xsd:string  "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.urmc.rochester.edu/encyclopedia/content.aspx?ContentTypeID=134&ContentID=85""}]}"