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There is a story about an evil queen being swapped for a nice woman.
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The Interchanged Queen is a 1984 DEFA fairy tale film by Dieter Scharfenberg with Ursula Karusseit in a double role as Herrish Queen and good-natured blacksmith Hanne. He is loosely based on the art fairy tale Die Schustersfrau als Zarin by Andrej Platonov.