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: angular momentum, fat, calcium, brittleness, ugly

Output: calcium


Input: Consider Input: descending, remorseful, down, right, ground

Output: remorseful


Input: Consider Input: cards, crew, deck, pack, check


Output: crew