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:
mad, beautiful, comfortable, fine, relaxed

Ex Output:
beautiful


Ex Input:
unyielding, firm, llc, alignment, private

Ex Output:
unyielding


Ex Input:
equitable, deal, mild, fair, endure

Ex Output:

equitable