: 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 | iisgr:hisco/RELATION | : 2020-06-07T08:19https://iisg.amsterdam/relation/provenance/2146cd41/ Create a prefix for https://iisg.amsterdam/relation/provenance/2146cd41/ Hit Enter to save Double click to create a prefix |