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We identify the four non - Mascarene clades as Evolutionarily Significant Units ( ESUs ) , while the Mascarene paradise flycatcher contains two ESUs corresponding to the Mauritius and R e union subspecies .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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