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.

Input: Consider Input: Category: SIMILES 
Clue: The expression this "as a judge" dates back to around 1700

Output: sober


Input: Consider Input: Category: MATHLETES 
Clue: John Nash has a beautiful mind that contributed to this "theory" of strategic decision making

Output: game theory


Input: Consider Input: Category: SCIENCE & NATURE 
Clue: In science a big M can mean mach, & a little m this, as in Einstein's most famous equation


Output: mass