@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81a6bb59-b6f8-46e6-a208-efdf711c31de> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81a6bb59-b6f8-46e6-a208-efdf711c31de> .