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]: bored, amp, board, fret, truss rod
[EX A]: bored

[EX Q]: vitamin c, carbs, fiber, fat, thin
[EX A]: thin

[EX Q]: classy, attractive, prime, fine, high quality
[EX A]:
prime