@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81a117cf-a3af-44c4-9842-cafa9d097181> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81a117cf-a3af-44c4-9842-cafa9d097181> .