assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:936 IAO:0000115 A central nervous system disease that is located_in the brain. xsd:string "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007644""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://medlineplus.gov/braindiseases.html""}]}"