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: emotional status 
Words: high quality, fine, annoyed, relaxed, ok

Answer: high quality


Question: Category: moral characteristic 
Words: unprejudiced, unjust, milky, ok, fair

Answer: milky


Question: Category: bird 
Words: parrot, crane, hoist, flamingo, tackle

Answer:
tackle