@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/b81afd4f-0635-4328-89fa-bcea642b810a> rdfs:isDefinedBy <https://stad.gent/data/blank_node/b81afd4f-0635-4328-89fa-bcea642b810a> .