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Danville Regional Airport is a public use airport in Pittsylvania County , Virginia , United States .
 Danville, Pittsylvania County, Virginia, 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:
 Danville, Pittsylvania County, Virginia, United States