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.
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Question: Category: ACTORS & ACTRESSES 
Clue: This violet-eyed beauty was 12 years old when she starred in "National Velvet" in 1944

Answer: elizabeth taylor


Question: Category: QUESTIONABLE SONGS 
Clue: The song that says, "Turn around & you're 2, turn around & you're 4" opens with this question

Answer: where are you going?


Question: Category: STRING THEORY 201 
Clue: In certain string theories, you can get up to 26 of these; we're used to dealing with 4 of them, of which length is one

Answer:
dimensions