Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.

Example Input: Category: police punishment 
Words: prison, fine, calm, money, suspension
Example Output: calm

Example Input: Category: fried food 
Words: apple, whittle, dumpling, fritter, pie
Example Output: whittle

Example Input: Category: animal 
Words: jump, drive, fly, eagle, beetle
Example Output:
drive