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]: duplex, studio, cabin, horizontal, flat
[EX A]: horizontal

[EX Q]: fret, notes, emotional state, bored, emotional upsets
[EX A]: notes

[EX Q]: adjacent, out of service, touching, close, near
[EX A]:
out of service