@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81e09420-9e5c-40a7-8fca-de628667f45e> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81e09420-9e5c-40a7-8fca-de628667f45e> .