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.

Example Input: format, image, fax, file, folder
Example Output: fax

Example Input: provision, fortitude, frank, brash, honest
Example Output: provision

Example Input: bus, jump, soar, car, fly
Example Output:
jump