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: emotional state, opposite of up, unhappy, down, miserable

A: opposite of up
****
Q: file, prepare, document, space, folder

A: prepare
****
Q: goose, cow, bend, lion, duck

A:
bend
****