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Drell is active as a scientific advisor to the U.S. government , and is a founding member of the JASON Defense Advisory Group .
 Drell, U.S. government, JASON Defense Advisory Group
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Drell, U.S. government, JASON Defense Advisory Group