@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81508600-e42c-45ec-8011-91abd81ca691> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81508600-e42c-45ec-8011-91abd81ca691> .