@prefix skos: <http://www.w3.org/2004/02/skos/core#> . <https://stad.gent/id/concept/540016716/2023-11-16T18:13:47.049Z> <http://purl.org/dc/terms/isVersionOf> <https://stad.gent/id/concept/540016716> . <https://stad.gent/id/concept/540012260/2023-11-16T18:13:22.043Z> skos:narrower <https://stad.gent/id/concept/540016716> . <https://stad.gent/id/concept/540016716> skos:prefLabel "Opalite Mining District"@nl .