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

[EX Q]: level, tone, fair, impartial, milky
[EX A]: impartial

[EX Q]: folder, schedule, correspondence, file, schedule appointments
[EX A]:
folder