instruction:
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.
question:
Category: AMERICAN LITERATURE 
Clue: Controversial even when serialized in the "National Era", it sold over 300,000 copies in book form in 1852
answer:
uncle tom\'s cabin


question:
Category: FAMILIAR PHRASES 
Clue: The phrase "Flower Power" was coined by this poet in the 1960s
answer:
allen ginsberg


question:
Category: MACBETH 
Clue: Macbeth says to this character, "Thy bones are marrowless, thy blood is cold"
answer:

banquo\'s ghost