@prefix skos: <http://www.w3.org/2004/02/skos/core#> . <https://stad.gent/id/concept/530010207> skos:prefLabel "sulfonated polystyrene (pp)"@nl . <https://stad.gent/id/concept/530010207/2023-03-01T02:49:18.629Z> <http://purl.org/dc/terms/isVersionOf> <https://stad.gent/id/concept/530010207> . <https://stad.gent/id/concept/530010204/2023-11-25T00:00:45.105Z> skos:narrower <https://stad.gent/id/concept/530010207> .