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: deck, sail, crew, head, fold

Output: fold


Input: Consider Input: ecstatic, content, disappointed, sad, service

Output: service


Input: Consider Input: milky, medium, fair, well, brisk


Output: brisk