@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/1ffdb0c8-1ab6-4988-8e64-180004bf39de> rdfs:isDefinedBy <https://stad.gent/data/blank_node/1ffdb0c8-1ab6-4988-8e64-180004bf39de> .