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:
chunky, heavy, fat, area, sugar

Ex Output:
sugar


Ex Input:
size, unjust, tone, fair, medium

Ex Output:
unjust


Ex Input:
fly, car, bird, bee, bats

Ex Output:

car