@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81e9c551-de34-476b-8ecb-fb122b4fd564> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81e9c551-de34-476b-8ecb-fb122b4fd564> .