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: boats 
Words: chips, crew, bow, deck, bridge

Answer: chips


Question: Category: aesthetic characteristic 
Words: there, ticket, fine, dull, level

Answer: ticket


Question: Category: animal 
Words: dangle, wave, fly, cockroach, run

Answer:
wave