19790
Return flight to the Canary Islands - The key role of peripheral populations of Afrocanarian blue tits ( Aves : Cyanistes teneriffae ) in multi - gene reconstructions of colonization pathways .
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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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