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: condominium, duplex, studio, flat, level

Output: level


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

Output: fax


Input: Consider Input: hoist, crane, excavator, winch, windlass


Output: hoist