: Polygonhttp://www.opengis.net/rdf# Create a prefix for http://www.opengis.net/rdf# Hit Enter to save Double click to create a prefix | : bag_metadatahttps://data.pldn.nl/geoe3/netherlands/graphs/ Create a prefix for https://data.pldn.nl/geoe3/netherlands/graphs/ Hit Enter to save Double click to create a prefix |