@prefix skos: <http://www.w3.org/2004/02/skos/core#> . <https://stad.gent/id/concept/530003121/2023-01-06T23:36:39.715Z> <http://purl.org/dc/terms/isVersionOf> <https://stad.gent/id/concept/530003121> . <https://stad.gent/id/concept/530003121> skos:prefLabel "polyethyleen"@nl . <https://stad.gent/id/concept/530003423/2023-01-06T23:47:02.100Z> skos:narrower <https://stad.gent/id/concept/530003121> .