Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.
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Question: Category: outdoor sport activity 
Words: hunting, goat, wrestle, fish, raft

Answer: goat


Question: Category: animal 
Words: stingray, horse, iguana, wrestle, fish

Answer: wrestle


Question: Category: aesthetic characteristic 
Words: level, fine, penalty, bright, neat

Answer:
penalty