instruction:
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.
question:
fire, hire, heat, inferno, earth
answer:
hire


question:
deck, check, joker, board, bridge
answer:
bridge


question:
foot, kilometer, milimeter, pound, elbow
answer:

elbow