@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81880a49-388c-4b69-bb68-6ac332dfabb8> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81880a49-388c-4b69-bb68-6ac332dfabb8> .