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

xd4: a skos:ConceptScheme .
xd4:-ECHI
  skos:prefLabel "Elément chimique / Ion / Isotope / Corps simple"@fr, "Chemical element / Ion / Isotope / Simple body"@en ;
  a isothes:ConceptGroup ;
  skos:member xd4:-R49LWZNW-H .

xd4:-R49LWZNW-H
  uneskos:memberOf xd4:-ECHI ;
  skos:hiddenLabel "Ions"@fr, "Ions"@en ;
  a skos:Concept ;
  skos:inScheme xd4: ;
  skos:prefLabel "ion"@es, "ion"@en, "ion"@fr .