assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:6314 IAO:0000115 A mature teratoma of the ovary that resembles a malformed human fetus with the caudal portion being more developed. xsd:string "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/pubmed/28446797""}]}"