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]: regular, general, captain, ubiquitous, popular
[EX A]: captain

[EX Q]: emotionalities, opposite of up, down, miserable, ashamed
[EX A]: opposite of up

[EX Q]: let go, ground, ice, air, fire
[EX A]:
let go