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:
dally, misuse, fritter, whittle, patty

Ex Output:
patty


Ex Input:
hiking, stingray, shark, fish, tiger

Ex Output:
hiking


Ex Input:
milky, fair, well, alright, impartial

Ex Output:

milky