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: descending, remorseful, down, right, ground

Output: remorseful


Input: Consider Input: fax, file, format, image, document

Output: fax


Input: Consider Input: geese, get down, duck, horse, dog


Output: get down