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:
fair, raining, trustworthy, endure, 70

Ex Output:
trustworthy


Ex Input:
impartial, fair, equitable, level, ok

Ex Output:
level


Ex Input:
bright, classy, attractive, ok, fine

Ex Output:

ok