@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <https://stad.gent/id/blank_node/81cb18ef-cd9a-4100-b870-bc12e4157a81> rdfs:isDefinedBy <https://stad.gent/data/blank_node/81cb18ef-cd9a-4100-b870-bc12e4157a81> .