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:
sail, bow, blind, dock, deck

Ex Output:
blind


Ex Input:
deck, tko, rudder, level, corner

Ex Output:
rudder


Ex Input:
joker, deck, fight, blocking, level

Ex Output:

joker