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: fritter, sweet roll, whittle, seperate, divide

Output: sweet roll


Input: Consider Input: pay, praise, fire, inferno, let go

Output: inferno


Input: Consider Input: cool, persistent, ethical, calm, mild


Output: mild