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: file, prepare, document, space, folder

A: prepare
****
Q: variety, endure, level, fair, milky

A: endure
****
Q: brisk, deal, fair, tangle, trustworthy

A:
trustworthy
****