assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:4876 IAO:0000115 A tracheal cancer that effects the airway that leads from the larynx to the bronchi. xsd:string "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007641""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://nci.nih.gov/dictionary/?CdrID=46623""}]}"