@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81dba72c-4f8f-41f8-8d6a-cf0dd409b69b> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81dba72c-4f8f-41f8-8d6a-cf0dd409b69b> .