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: group, clan, hamburger, club, bar

Output: hamburger


Input: Consider Input: late, up to the moment, current, course, belated

Output: course


Input: Consider Input: downward, ashamed, descending, down, backward


Output: ashamed