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: animal 
Words: shark, dolphin, fish, hunting, cat

Answer: hunting


Question: Category: computers 
Words: folder, document, file, image, correspondence

Answer: correspondence


Question: Category: boats 
Words: suits, galley, deck, dock, rudder

Answer:
suits