Given a set of five words, generate the word from the set that does not belong (i.e. is the least relevant) with the other words. Words are separated by commas.

Ex Input:
confident, popular, classy, cool, chill

Ex Output:
chill


Ex Input:
falsification, fib, invent, fudge, cupcake

Ex Output:
cupcake


Ex Input:
honest, integrity, frank, wiener, precise

Ex Output:

wiener