assertion  retraction  graph  subject    predicate    object                                                      datatype    annotation
1          0           graph  DOID:6229  IAO:0000115  A mature teratoma of the ovary that presents in childhood.  xsd:string  "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/pubmed/30165903""}]}"