assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:4112 IAO:0000115 A cervical cancer that has_material_basis_in carcinomatous (epithelial tissue) and sarcomatous (connective tissue) components. xsd:string "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007645""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/pubmed/18357808""}]}"