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Roundtown Mercedes of Maryscot ( born April 2 , 2005 ) , also known as Sadie , is a Scottish terrier from Mackinac Island in the U.S. state of Michigan .
 Roundtown Mercedes, Maryscot, Michigan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Roundtown Mercedes, Maryscot, Michigan