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]: emotional upsets, emotional supports, down, ashamed, up
[A]: up


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


[Q]: horse, swim, bow, bend, duck
[A]:
horse