@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81f1b235-2bd2-406e-ac2b-ec58cf4b04ec> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81f1b235-2bd2-406e-ac2b-ec58cf4b04ec> .