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: fritter, fried, cake, patty, seperate

Output: seperate


Input: Consider Input: club, grilled cheese, picnic, lettuce, hero


Output: picnic