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.

Input: Consider Input: fine, even, unjust, impartial, fair

Output: even


Input: Consider Input: fret, notes, emotional state, bored, emotional upsets

Output: notes


Input: Consider Input: club, outing, clan, group, hero


Output: hero