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]: hot, optimist, cool, calm, relaxed
[EX A]: hot

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

[EX Q]: chips, apron, caution, fight, deck
[EX A]:
chips