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.

Q: fair, color, unprejudiced, fine, decent

A: color
****
Q: crew, ring, deck, blocking, punch

A: crew
****
Q: format, image, fax, file, folder

A:
fax
****