assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:3355 rdfs:label fibrosarcoma xsd:string 1 0 graph DOID:3355 IAO:0000115 A connective tissue cancer that has_material_basis_in fibrous connective tissue and characterized by the presence of immature proliferating fibroblasts or undifferentiated anaplastic spindle cells in a storiform pattern. xsd:string 1 0 graph DOID:3355 rdfs:subClassOf DOID:162 _IRI 1 0 graph DOID:3355 rdf:type owl:Class _IRI