@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/57ffaf30-d1a4-438a-a5d6-7be952a8fe23> rdfs:isDefinedBy <https://stad.gent/data/blank_node/57ffaf30-d1a4-438a-a5d6-7be952a8fe23> .