@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81c7b9f1-f2a9-401b-ad0a-1232f7d9f731> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81c7b9f1-f2a9-401b-ad0a-1232f7d9f731> .