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: luke, fair, variety, tone, well

Answer: luke


Question: Category: guitar part 
Words: neck, strap lock, fret, angry, notes

Answer: angry


Question: Category: food 
Words: cheese, sausage, concise, frank, bun

Answer:
concise