@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81ff0dd4-2ea6-43e7-bb5b-72c878c5c68d> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81ff0dd4-2ea6-43e7-bb5b-72c878c5c68d> .