Instructions: 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: Category: AT THE MOVIES 
Clue: Dan Aykroyd played Mack Sennett in this 1992 biopic starring Robert Downey, Jr.
Output:
chaplin