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On April 30 , 2013 , Gomez defeated former U.S. Attorney for Massachusetts and former Acting Director of the Bureau of Alcohol , Tobacco and Firearms Michael Sullivan and State Representative Daniel Winslow in the Republican primary with 51 % of the vote .
 Bureau of Alcohol , Tobacco and Firearms Michael Sullivan, Daniel Winslow, Republican
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bureau of Alcohol , Tobacco and Firearms Michael Sullivan, Daniel Winslow, Republican