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.
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Question: crane, goose, hoist, pelican, hummingbird

Answer: hoist


Question: fish, stingray, climbing, trap, hiking

Answer: stingray


Question: flat, hill, townhome, horizontal, plain

Answer:
townhome