@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81dce139-36ad-4472-90a0-4ab438178a63> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81dce139-36ad-4472-90a0-4ab438178a63> .