You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Q: Category: RULERS 
Clue: In 770 this king of the Franks married Desiderata, daughter of the Lombard king Desiderius

A: charlemagne
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Q: Category: CLASSICAL MUSIC 
Clue: Mendelssohn's "Songs without Words" were once the most popular pieces for this instrument

A: piano
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Q: Category: GERMAN CUISINE 
Clue: In Germany, these sweets are known as kokonuss-makronen

A:
coconut macaroons
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