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]: happy, substance, shop, tools, content
[EX A]: happy

[EX Q]: alright, detailed, annoyed, fine, calm
[EX A]: detailed

[EX Q]: forward, down, downward, ground, ashamed
[EX A]:
ashamed