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:
fine, prime, arrest, hot, jail time

Ex Output:
hot


Ex Input:
leverage, solid, firm, amalgamated, concerted

Ex Output:
solid


Ex Input:
squashed, condominium, flat, even, level

Ex Output:

even