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:
horse, trap, tiger, sea turtle, fish
answer:
trap


question:
ice, let go, fire, sack, replace
answer:
ice


question:
fair, even, milky, ghostly, luke
answer:

luke