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: aesthetic characteristic 
Words: comfortable, pretty, there, fine, classy

Answer: comfortable


Question: Category: construction 
Words: windlass, crane, hoist, digger, upraise

Answer: hoist


Question: Category: construction 
Words: hoist, crane, excavator, winch, windlass

Answer:
hoist