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: police punishment 
Words: wispy, fine, probation, calm, prime

Answer: calm


Question: Category: moral characteristic 
Words: unprejudiced, warm, fair, ok, balanced

Answer: warm


Question: Category: bird 
Words: parrot, crane, egret, swift, excavator

Answer:
excavator