@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81b57351-a731-4be1-8feb-3656d11f0685> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81b57351-a731-4be1-8feb-3656d11f0685> .