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:
precise, integrity, frank, cheese, brash

Ex Output:
cheese


Ex Input:
firm, shareholders, common, alignment, taut

Ex Output:
taut


Ex Input:
hot, beautiful, fine, classy, flyaway

Ex Output:

flyaway