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:
precise, integrity, frank, cheese, brash

Ex Output:
cheese


Ex Input:
level, impartial, fair, tone, cool

Ex Output:
impartial


Ex Input:
folder, format, file, text, reception

Ex Output:

reception