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: equitable, just, fair, loyal, even

A: even
****
Q: jail, probation, fine, classy, firstrate

A: classy
****
Q: bow, deck, dock, apron, hull

A:
apron
****