@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81b6c4ec-a43e-439c-ad71-fe65b8a521e6> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81b6c4ec-a43e-439c-ad71-fe65b8a521e6> .