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:
fair, well, milky, medium, loyal

Ex Output:
loyal


Ex Input:
firm, shareholders, common, alignment, taut

Ex Output:
taut


Ex Input:
brisk, color, fair, tone, medium

Ex Output:

brisk