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]: down, kind, ashamed, sliding, unhappy
[EX A]: sliding

[EX Q]: angry, joyful, tools, fearful, content
[EX A]: tools

[EX Q]: winch, crane, mallet, windlass, steam roller
[EX A]:
mallet