: valueUrlhttp://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 | : _city_http://www.gemeentegeschiedenis.nl/gemeentenaam/ Create a prefix for http://www.gemeentegeschiedenis.nl/gemeentenaam/ Hit Enter to save Double click to create a prefix | : 2019-04-04T11:27https://iisg.amsterdam/ndb-sample-amsterdam/provenance/fbaa3f5d/ Create a prefix for https://iisg.amsterdam/ndb-sample-amsterdam/provenance/fbaa3f5d/ Hit Enter to save Double click to create a prefix |