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:
fine, firstrate, ticket, money, handsome

Ex Output:
handsome


Ex Input:
box, caution, board, tko, deck

Ex Output:

board