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: order office supplies, file, errands, prepare, motherboard

A: motherboard
****
Q: finger, heel, foot, ounce, elbow

A: ounce
****
Q: out of service, close, neighboring, touching, beside

A:
out of service
****