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: milky, fair, well, alright, impartial

A: milky
****
Q: fire, instruct, inferno, retire, scold

A: inferno
****
Q: arrest, beautiful, dull, high quality, fine

A:
arrest
****