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]: air, fire, hire, ban, promote
[A]: air


[Q]: jail, probation, fine, classy, firstrate
[A]: classy


[Q]: raining, luke, fair, alright, sunny
[A]:
alright