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:
fly, grasshopper, walk, waggle, train
answer:
train


question:
geese, crouch, duck, elephant, mallet
answer:
crouch


question:
cookies, rich, invent, fudge, chocolate
answer:

invent