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The dominant species on the lower elevations are remarkably diverse , including Aesculus hippocastanum ( in more damp places ) and various deciduous oaks ( Quercus frainetto , Q. pubescens , Q. cerris , Q. trojana , Q. petraea ) .
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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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