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, flutter, bus, drive, fish
answer:
fish


question:
warm, optimist, hot, relaxing, cool
answer:
optimist


question:
prime, custody, bright, fine, prison
answer:

bright