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: neat, beautiful, dull, fine, firstrate

Output: firstrate


Input: Consider Input: sugar, angular momentum, large, area, fat

Output: sugar


Input: Consider Input: united, shareholders, firm, stiff, concerted


Output: stiff