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:
fritter, dunker, patty, waste, danish

Ex Output:
waste


Ex Input:
fighter, boring, popular, standard, general

Ex Output:
fighter


Ex Input:
hunt, fish, stingray, dolphin, bat

Ex Output:

hunt