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: corporate 
Words: unyielding, concerted, firm, combined, united

Ex Output:
unyielding


Ex Input:
Category: shady activities 
Words: fib, replace, falsification, molasses, fudge

Ex Output:
molasses


Ex Input:
Category: moral characteristic 
Words: impartial, trustworthy, honorable, fair, tangle

Ex Output:

tangle