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: lifeline, stern, fold, deck, rudder

Answer: fold


Question: Category: food 
Words: fortitude, meat, cheese, frank, pork

Answer: fortitude


Question: Category: moral characteristic 
Words: well, honorable, fair, just, brisk

Answer:
brisk