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:
cake, fudge, rich, invent, cream
answer:
invent


question:
air, fire, hire, ban, promote
answer:
air


question:
burn, scold, heat, fire, water
answer:

scold