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:
hoagie, submarine, place, open-faced, club

Ex Output:
place


Ex Input:
bike, flap, fly, walk, wave

Ex Output:
walk


Ex Input:
corner, knockout, deck, blind, box

Ex Output:

blind