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:
chunky, fat, calcium, carbs, iron

Ex Output:
chunky


Ex Input:
blunt, sausage, hot dog, frank, wienerwurst

Ex Output:
blunt


Ex Input:
bike, fish, jump, eagle, fly

Ex Output:

bike