5671
Macaronesia ( north - east Atlantic archipelagos ) has been host to complex patterns of colonization and differentiation in many groups of organisms including seabirds such as gadfly petrels ( genus Pterodroma ) .
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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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