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She was appointed by President Richard M. Nixon and served from 1969 to 1977 , continuing her service under President Gerald R. Ford .
 Richard M. Nixon, Gerald R. Ford
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Richard M. Nixon, Gerald R. Ford