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: dumpling, fritter, goodbye, pastry, skin

Output: goodbye


Input: Consider Input: equitable, just, fair, loyal, even

Output: even


Input: Consider Input: order office supplies, support, answer calls, file, format


Output: format