assertion  retraction  graph  subject    predicate    object                                                              datatype    annotation
1          0           graph  DOID:3870  IAO:0000115  A central nervous system embryonal tumor that occurs in childhood.  xsd:string  "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6315657/""}]}"