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: bird 
Words: swift, tackle, pelican, crane, hoist
Example Output: hoist

Example Input: Category: aesthetic characteristic 
Words: ghostly, milky, windy, fair, texture
Example Output: windy

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

