: aboutUrlhttp://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 | : _EMIGRA_https://iisg.amsterdam/catasto/code/EMIGRA/ Create a prefix for https://iisg.amsterdam/catasto/code/EMIGRA/ Hit Enter to save Double click to create a prefix | : 2018-09-27T09:36https://iisg.amsterdam/emigra/provenance/2b3bf7cf/ Create a prefix for https://iisg.amsterdam/emigra/provenance/2b3bf7cf/ Hit Enter to save Double click to create a prefix |