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:
davit, hoist, crane, sandpiper, davit

Ex Output:
davit


Ex Input:
jog, car, bike, bats, fly

Ex Output:

bats