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: moral characteristic 
Words: variety, fine, fair, ok, balanced
Example Output: variety

Example Input: Category: shady activities 
Words: cookies, wrongful, fudge, smuggled, smear
Example Output: cookies

Example Input: Category: emotional status 
Words: alert, happy, probation, decent, fine
Example Output:
probation