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]: squashed, cabin, flat, smooth, round
[EX A]: smooth

[EX Q]: fret, emotional supports, output cord, angry, concerned
[EX A]: output cord

[EX Q]: clan, hamburger, discothek, outing, club
[EX A]:
hamburger