@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81ff4bcb-f99c-4f88-b60d-104f1ddc512a> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81ff4bcb-f99c-4f88-b60d-104f1ddc512a> .