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Sullivan County Airport is a county-owned public-use airport located three nautical miles ( 6 km ) northwest of the central business district of Sullivan , a city in Sullivan County , Indiana , United States .
 Sullivan, Sullivan, Sullivan County, Indiana, 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:
 Sullivan, Sullivan, Sullivan County, Indiana, United States