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]: valley, house, cabin, squashed, flat
[A]: valley


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


[Q]: unyielding, taut, resistant, concerted, firm
[A]:
concerted