: 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 | : P139Yhttp://reference.data.gov.uk/id/gregorian-interval/1800-01-01T00:00:00/ Create a prefix for http://reference.data.gov.uk/id/gregorian-interval/1800-01-01T00:00:00/ Hit Enter to save Double click to create a prefix | : 2017-10-31T17:59http://iisg.amsterdam/hiscam_u2/provenance/ced49da9/ Create a prefix for http://iisg.amsterdam/hiscam_u2/provenance/ced49da9/ Hit Enter to save Double click to create a prefix |