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In the late 19th century , it was introduced into the Aleutian Islands southwest of Alaska .
 location: Aleutian Islands; location: Alaska
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Aleutian Islands; location: Alaska