: virtualhttp://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 | : 2017-10-31T17:55http://iisg.amsterdam/hiscam_ca/provenance/58742daf/ Create a prefix for http://iisg.amsterdam/hiscam_ca/provenance/58742daf/ Hit Enter to save Double click to create a prefix |