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: deck, caution, suits, queen, check

A: caution
****
Q: close, nearest, touching, on top of, barred

A: barred
****
Q: sunny, 70, fair, milky, windy

A:
milky
****