@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81f55357-540a-444c-a8b0-6852b72b7c19> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81f55357-540a-444c-a8b0-6852b72b7c19> .