Works for SKOS files produced with Unilexicon and subset of Lexaurus export.
<rdf:RDF xmlns:rdf="http://www.w3.org ... rdf-syntax-ns#" xmlns:skos="http://www.w3.org/2004/02/skos/core#"> <skos:Concept rdf:about="...#mammals"> <skos:prefLabel>mammals</skos:prefLabel> <skos:broader rdf:resource="...#animals"/> </skos:Concept> <skos:Concept rdf:about="..#animals"> <skos:prefLabel>animals</skos:prefLabel> <skos:narrower rdf:resource="...#mammals"/> </skos:Concept> </rdf:RDF>