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.

Ex Input:
Category: chocolate food 
Words: brownie, loosen, chocolate cake, fudge, molasses

Ex Output:
loosen


Ex Input:
Category: aesthetic characteristic 
Words: luke, fair, variety, tone, well

Ex Output:
luke


Ex Input:
Category: corporate 
Words: firm, common, taut, corporation, leverage

Ex Output:

taut