@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/c509eb87-fba3-4173-b1aa-49ac2e75906b> rdfs:isDefinedBy <https://stad.gent/data/blank_node/c509eb87-fba3-4173-b1aa-49ac2e75906b> .