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Corrie Clark ( born April 11 , 1982 in Malvern , Pennsylvania , USA ) is a female breaststroke and medley swimmer from the United States .
 Corrie Clark, Malvern , Pennsylvania, United States
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Corrie Clark, Malvern , Pennsylvania, United States