@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/668d1b31-9cd6-42bd-86d1-b9ad04de6281> rdfs:isDefinedBy <https://stad.gent/data/blank_node/668d1b31-9cd6-42bd-86d1-b9ad04de6281> .