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:
trap, kayak, bat, climbing, fish

Ex Output:
bat


Ex Input:
invent, smuggled, smear, fudge, pie

Ex Output:
pie


Ex Input:
honorable, fair, variety, tone, flaxen

Ex Output:

honorable