assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:10011 IAO:0000115 A thyroid gland cancer that has_material_basis_in lymphocytes. xsd:string "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/books/NBK544282/""}]}"