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In 1976 , he reprised the role as the middle-aged and elder John Quincy Adams in the acclaimed PBS miniseries " The Adams Chronicles " .
 John Quincy Adams, PBS
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 Quincy Adams, PBS