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]: bike, flap, fly, walk, wave
[A]: walk


[Q]: schedule, errands, file, schedule appointments, hardware
[A]: hardware


[Q]: sunny, fair, fine, make the grade, mild
[A]:
fine