@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81b0421f-c52c-4721-bf23-48cdeab8d61f> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81b0421f-c52c-4721-bf23-48cdeab8d61f> .