assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:5724 IAO:0000115 A seminal vesicle tumor that derives_from glandular epithelial cells and that is located_in the seminal vesicle. xsd:string "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007645""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4996551/""}]}"