: aboutUrlhttp://www.w3.org/ns/csvw# Create a prefix for http://www.w3.org/ns/csvw# Hit Enter to save Double click to create a prefix | : _BETAIL_https://iisg.amsterdam/catasto/code/BETAIL/ Create a prefix for https://iisg.amsterdam/catasto/code/BETAIL/ Hit Enter to save Double click to create a prefix | : 2018-09-27T08:08https://iisg.amsterdam/betail/provenance/dfd2610f/ Create a prefix for https://iisg.amsterdam/betail/provenance/dfd2610f/ Hit Enter to save Double click to create a prefix |