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:
danish, fried, lollygag, pastry, fritter

Ex Output:
lollygag


Ex Input:
fair, raining, trustworthy, endure, 70

Ex Output:
trustworthy


Ex Input:
fish, train, swim, jog, fly

Ex Output:

fish