@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81e99b1b-4fa5-4063-9bae-4ea6dc6709eb> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81e99b1b-4fa5-4063-9bae-4ea6dc6709eb> .