@prefix skos: . @prefix dc: . @prefix xsd: . skos:exactMatch , ; dc:modified "2016-06-21"^^xsd:date ; skos:prefLabel "water pollution"@en, "pollution de l'eau"@fr ; a skos:Concept ; skos:topConceptOf , ; skos:inScheme , ; skos:altLabel "pollution métallique"@fr . skos:prefLabel "pollution nuisance (microthesaurus)"@fr ; a skos:ConceptScheme ; skos:hasTopConcept . skos:prefLabel "Thesaurus Irstea (thesor)"@fr ; a skos:ConceptScheme ; skos:hasTopConcept .