@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81ff5f2d-d6d6-49bf-90bf-b829ac877d31> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81ff5f2d-d6d6-49bf-90bf-b829ac877d31> .