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:
jail, probation, fine, classy, firstrate

Ex Output:
classy


Ex Input:
stormy, fair, just, mild, brisk

Ex Output:
just


Ex Input:
misuse, danish, fritter, dally, whittle

Ex Output:

danish