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.

[EX Q]: fine, classy, mad, happy, relaxed
[EX A]: classy

[EX Q]: windlass, excavator, crane, hummingbird, steam roller
[EX A]: hummingbird

[EX Q]: disappointed, excited, ecstatic, activity, content
[EX A]:
activity