@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81c8e6ff-b3dd-4834-961f-90b9495e125b> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81c8e6ff-b3dd-4834-961f-90b9495e125b> .