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: MARK ANTONYMS
Clue: The traditional mark of someone who can't sign his name has this opposite in tic-tac-toe

A: o
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Q: Category: LOOK OUT "BELL"OW
Clue: As one word, it's a plant also called deadly nightshade; as 2 words, a Stevie Nicks album

A: belladonna/"bella donna"
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Q: Category: WESTERNS
Clue: 4 of the members of this title group, including James Coburn, die in the film's big gunfight

A:
the magnificent seven
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