@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81b5aa1a-4cef-4e31-bc31-a203c65b8dae> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81b5aa1a-4cef-4e31-bc31-a203c65b8dae> .