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The Downingtown Area School District is a school district based in Downingtown , in Chester County , Pennsylvania , in the United States .
 Downingtown Area, Downingtown, Chester County, 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:
 Downingtown Area, Downingtown, Chester County, Pennsylvania, United States