OSM tag name=Κάτω Ποταμιά matches Kato Potamia in these Wikidata fields:
OSM tag name:el=Κάτω Ποταμιά matches Kato Potamia in these Wikidata fields:
OSM tag name:en=Kato Potamia matches Kato Potamia in these Wikidata fields: