assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:10314 IAO:0000115 A endocardium disease characterized by inflammation of the endocardium of the heart chambers and valves. xsd:string "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007637""},{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007638""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://en.wikipedia.org/wiki/Endocarditis""},{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://www.nhlbi.nih.gov/health/health-topics/topics/endo/""}]}"