@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81d5d1f2-b819-4997-a499-218eab22aaab> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81d5d1f2-b819-4997-a499-218eab22aaab> .