@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81a90223-341f-4359-a146-48c656b2e483> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81a90223-341f-4359-a146-48c656b2e483> .