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:
deck, check, joker, board, bridge

Ex Output:
bridge


Ex Input:
up to the moment, tide, current, jetstream, brine

Ex Output:
up to the moment


Ex Input:
molasses, pie, invent, fudge, cookies

Ex Output:

invent