@prefix xd4: <http://data.loterre.fr/ark:/67375/XD4> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix uneskos: <http://purl.org/umu/uneskos#> .
@prefix isothes: <http://purl.org/iso25964/skos-thes#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

xd4:-SQC74GVK-C
  skos:prefLabel "arcilla"@es, "argile"@fr, "clay"@en ;
  a skos:Concept ;
  uneskos:memberOf xd4:-ROCH .

xd4:-R6VFCN4H-8
  skos:prefLabel "mármol"@es, "marbre"@fr, "marble"@en ;
  a skos:Concept ;
  uneskos:memberOf xd4:-ROCH .

xd4:-C2VZC86W-0
  skos:prefLabel "caolín"@es, "kaolin"@fr, "kaolin"@en ;
  a skos:Concept ;
  uneskos:memberOf xd4:-ROCH .

xd4:-MATE
  skos:prefLabel "Material / Product / Substance"@en, "Matériau / Produit / Substance"@fr ;
  a isothes:ConceptGroup ;
  isothes:subGroup xd4:-ROCH .

xd4: a skos:ConceptScheme .
xd4:-D2V6V058-K
  skos:prefLabel "piedra"@es, "pierre"@fr, "stone"@en ;
  a skos:Concept ;
  uneskos:memberOf xd4:-ROCH .

xd4:-ROCH
  skos:member xd4:-SQC74GVK-C, xd4:-R6VFCN4H-8, xd4:-D2V6V058-K, xd4:-WQMZ0C3J-9, xd4:-C2VZC86W-0, xd4:-XS2Z829R-K ;
  rdfs:comment "Nombre de membres : 6"@fr, "Number of members: 6"@en ;
  skos:prefLabel "Rock"@en, "Roche"@fr ;
  a isothes:ConceptGroup ;
  skos:inScheme xd4: ;
  isothes:superGroup xd4:-MATE .

xd4:-XS2Z829R-K
  skos:prefLabel "carbón"@es, "charbon"@fr, "coal"@en ;
  a skos:Concept ;
  uneskos:memberOf xd4:-ROCH .

xd4:-WQMZ0C3J-9
  skos:prefLabel "petróleo"@es, "pétrole"@fr, "petroleum"@en ;
  a skos:Concept ;
  uneskos:memberOf xd4:-ROCH .