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This role endeared him to the whalers and led to the idea that he was “ leader of the pack , ” although such a role was more likely taken by a female ( as is typical among killer whales ) , probably the whale known as Stranger .
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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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