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Calvin Coolidge Ermer ( November 10 , 1923 – August 8 , 2009 ) was an American second baseman , manager , coach and scout in Major League Baseball .
 Ermer, American, Major League Baseball
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ermer, American, Major League Baseball