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The central figures , left to right , are John Adams of Massachusetts , Roger Sherman of Connecticut , Robert R. Livingston , Thomas Jefferson of Virginia , and Benjamin Franklin ( seated ) .
 John Adams, Roger Sherman, Thomas Jefferson, Benjamin Franklin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 John Adams, Roger Sherman, Thomas Jefferson, Benjamin Franklin