assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:6315 IAO:0000115 A mature teratoma of the ovary that is predominantly solid with interspersed cysts. xsd:string "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://pubs.rsna.org/doi/full/10.1148/radiographics.21.2.g01mr09475""},{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/pubmed/27636886""}]}"