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: weather 
Words: equitable, fair, windy, cold, raining
Example Output: equitable

Example Input: Category: moral characteristic 
Words: dishonest, ok, fair, mild, fine
Example Output: mild

Example Input: Category: emotional status 
Words: below, shameful, unhappy, down, disgusted
Example Output:
below