@prefix skos: . @prefix inist: . a skos:ConceptScheme . inist:semCategory "Matériau / Matière / Etat de la matière / Milieu"@fr, "Material / Matter / State of matter / Medium"@en ; skos:hiddenLabel "Surface libre"@fr, "Free surface"@en ; a skos:Concept ; skos:inScheme ; skos:prefLabel "surface libre"@fr, "free surface"@en . skos:prefLabel "Matériau / Matière / Etat de la matière / Milieu"@fr, "Material / Matter / State of matter / Medium"@en ; a skos:Collection ; skos:member .