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:
fair, loyal, decent, fine, tone

Ex Output:
tone


Ex Input:
fawn, love, calf, flatter, identity

Ex Output:
calf


Ex Input:
suits, galley, blind, deck, chips

Ex Output:

galley