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:
hatchling, fawn, cute, kid, deer

Ex Output:
cute


Ex Input:
fair, impartial, tone, well, balanced

Ex Output:
tone


Ex Input:
foot, shin, hand, milimeter, heel

Ex Output:

milimeter