@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81ad0ac1-c0c6-45f7-a873-add8e2d2a823> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81ad0ac1-c0c6-45f7-a873-add8e2d2a823> .