@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81b90a87-4d01-49e7-8603-45627925b48b> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81b90a87-4d01-49e7-8603-45627925b48b> .