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: club, open-faced, bacon, french toast, dance hall

A: dance hall
****
Q: jog, cow, hike, duck, crouch

A: cow
****
Q: service, specialty, content, item, nervous

A:
nervous
****