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: format, image, fax, file, folder

Output: fax


Input: Consider Input: canvas, blocking, deck, sail, corner

Output: sail


Input: Consider Input: alright, alert, fine, detached, level


Output: level