@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81b57d9e-6cd4-4cde-9668-df6b3bec50fa> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81b57d9e-6cd4-4cde-9668-df6b3bec50fa> .