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: fax, file, format, image, document

Output: fax


Input: Consider Input: fire, blaze, water, flame, recruit

Output: recruit


Input: Consider Input: mild, fair, texture, even, milky


Output: mild