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]: up to the moment, tide, current, jetstream, brine
[A]: up to the moment


[Q]: emotional upsets, emotional supports, down, ashamed, up
[A]: up


[Q]: taut, sustainability, concerted, firm, corporation
[A]:
taut