assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:3388 IAO:0000115 A mouth disease that is relating to or affecting the structures surrounding and supporting the teeth. xsd:string "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.nidcr.nih.gov/health-info/gum-disease/more-info""}]}"