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: MYSTERY NOVELS 
Clue: The first line of dialogue in this 1930 novel is spoken to secretary Effie Perine, "Yes, sweetheart?"

A: the maltese falcon
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Q: Category: PHRASE ORIGINS 
Clue: In 1945 George Orwell coined this 2-word phrase for "an epoch as horribly stable as the slave empires of antiquity"

A: cold war
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Q: Category: FLAGS 
Clue: This color appears on more different national flags than any other

A:
red
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