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 consistency, answers should be in all lower cased letters.

Q: Category: SPACE MISSIONS 
Clue: The New Horizons mission was launched to explore this planet before it was downgraded to a dwarf

A: pluto
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Q: Category: THE 16th CENTURY 
Clue: In the 1569 Union of Lublin, Zygmunt II united Lithuania & this country

A: poland
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Q: Category: I'LL BE YOUR WAITER 
Clue: We have an international flavor for this "of the day"--Cuban black bean or French onion

A:
soup
****