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: cool, unruffled, funny, chill, ethical

Output: chill


Input: Consider Input: group, clan, hamburger, club, bar

Output: hamburger


Input: Consider Input: fawn, woods, pester, social, swoon


Output: woods