: valuehttp://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 | {WKT} @en | : 2019-02-16T01:09https://iisg.amsterdam/taalKaartPolygons/provenance/13aa1006/ Create a prefix for https://iisg.amsterdam/taalKaartPolygons/provenance/13aa1006/ Hit Enter to save Double click to create a prefix |