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:
gunwale, deck, punch, sail, bow

Ex Output:
punch


Ex Input:
happy, well, content, high quality, fine

Ex Output:

high quality