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:
corner, ring, crew, deck, apron

Ex Output:
crew


Ex Input:
current, water, detests, blue, jetstream

Ex Output:
detests


Ex Input:
crane, dump truck, hummingbird, hoist, pelican

Ex Output:

dump truck