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:
stormy, fair, just, mild, brisk

Ex Output:
just


Ex Input:
color, variety, well, fair, decent

Ex Output:
decent


Ex Input:
flyaway, jail time, ok, arrest, fine

Ex Output:

ok