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: emotional status 
Words: well, detached, fine, wispy, relaxed
Example Output: wispy

Example Input: Category: boxing terminology 
Words: deck, corner, blocking, call, box
Example Output: call

Example Input: Category: emotional status 
Words: unhappy, down, lower, emotional, emotional state
Example Output:
lower