Question: Watertown International Airport and Blue Grass Airport, are in which country?
Related documents: [0]  [DOC] Blue Grass Airport (IATA: LEX, ICAO: KLEX, FAA LID: LEX) is a public airport in Fayette County, Kentucky, 4 miles west of downtown Lexington. Located among world-renowned horse farms and situated directly across from Keeneland Race Course, Blue Grass Airport is the primary airport serving central and eastern Kentucky. More than 1.2 million passengers depart or arrive annually at Blue Grass Airport. In 2016, the airport served 1,245,251 passengers via four major airline carriers: Allegiant, American Airlines, Delta Air Lines and United Airlines. [END] 
[1]  [DOC] Watertown International Airport (IATA: ART, ICAO: KART, FAA LID: ART) is a county owned, public use airport located in Jefferson County, New York, United States. It is located five nautical miles (6 mi, 9 km) west of the central business district of Watertown. The airport is mostly used for general aviation, but has scheduled passenger service provided by one commercial airline and subsidized by the Essential Air Service program. The airport does not provide any scheduled international passenger flights, but is available as an international port of entry for private aircraft on two hours advance notice to customs from pilots. [END] 
Answer: 
United States
United States