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]: leverage, solid, firm, amalgamated, concerted
[A]: solid


[Q]: fair, pale, windy, flaxen, cool
[A]:
windy