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Later on , at a Gathering , Bluepaw meets a tabby apprentice named Crookedpaw ( later Crookedjaw and then Crookedstar ) , an apprentice from RiverClan , and they quickly become friends .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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