assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:710 IAO:0000115 A leukemia that is located_in the spleen. It results_in an enlargement of the leukemia. xsd:string "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1492871/""}]}"