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: poker 
Words: punch, pack, deck, check, fold

Answer: punch


Question: Category: boats 
Words: check, stern, hull, galley, deck

Answer: check


Question: Category: accomodation 
Words: paved, mansion, townhome, valley, flat

Answer:
valley