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Gen. George Pickett , had begun the 22 mile ( 35 " km ) march from Chambersburg , while Brig .
 George Pickett, Chambersburg, Brig
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 George Pickett, Chambersburg, Brig