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


[Q]: unyielding, concerted, firm, combined, united
[A]: unyielding


[Q]: hill, squashed, elevation, flat, paved
[A]:
squashed