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: aesthetic characteristic 
Words: comfortable, pretty, there, fine, classy
Example Output: comfortable

Example Input: Category: aesthetic characteristic 
Words: flyaway, bright, fine, classy, handsome
Example Output:
flyaway