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]: jog, cow, hike, duck, crouch
[A]: cow


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


[Q]: row, fish, wrestle, whale, raft
[A]:
whale