: asNeededhttp://inspire.ec.europa.eu/metadata-codelist/MaintenanceFrequency/ Create a prefix for http://inspire.ec.europa.eu/metadata-codelist/MaintenanceFrequency/ Hit Enter to save Double click to create a prefix | dct:Frequency | : elevation-dem-2mhttps://data.pldn.nl/geoe3/Catalonia-Spain-Digital-Assets-EuroSDR/graphs/ Create a prefix for https://data.pldn.nl/geoe3/Catalonia-Spain-Digital-Assets-EuroSDR/graphs/ Hit Enter to save Double click to create a prefix |