: 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 | : P151Yhttp://reference.data.gov.uk/id/gregorian-interval/1700-01-01T00:00:00/ Create a prefix for http://reference.data.gov.uk/id/gregorian-interval/1700-01-01T00:00:00/ Hit Enter to save Double click to create a prefix | iisgr:CEDAR-Sweden/se_CEDAR_HISCO/provenance/50d5e9f3/2021-02-04T00:31 |