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Seventeen strains of H. parabelopolskyi are found only in the Blackcap , and form a monophyletic group ; three further members of that group are found only in the Garden Warbler , and another three occur in the African Hill Babbler , supporting the shared ancestry of the three bird species .
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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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