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: late, up to the moment, current, course, belated

A: course
****
Q: fair, impartial, tone, well, balanced

A: tone
****
Q: ok, pretty, alert, detached, fine

A:
pretty
****