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: THE QUOTABLE EINSTEIN 
Clue: This "is more important than knowledge"

A: imagination
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Q: Category: INK 
Clue: Company that makes the Eraser Mate, a pen that has erasable ink

A: paper mate
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Q: Category: DIMENSIONS 
Clue: Don't lose the thread--there are 10 or so dimensions in this physics theory

A:
string theory
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