@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81f21990-5450-4262-bb2e-09f23aec4b8c> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81f21990-5450-4262-bb2e-09f23aec4b8c> .