Choose an area that has an article name on the english Wikipedia with the exact same spelling and case. E.g. "Sweden" or "Västernorrland County".
This tool will lookup the right relation id from the Wikidata API and then query Overpass-API for the choosen data in the area. If the area is missing an OpenStreetMap relation id property you will get an error. Overpass is quite slow so you might have to wait a minute or two for big countries or queries that select a lot of POIs