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, board, cards, knockout, draw

A: knockout
****
Q: sergeant, lieutenant, fighter, general, ordinary

A: ordinary
****
Q: brisk, mild, unjust, fair, stormy

A:
unjust
****