Question: Watertown International Airport and Blue Grass Airport, are in which country?
Context: Comair Flight 5191, marketed as Delta Connection Flight 5191, was a scheduled United States (US) domestic passenger flight from Lexington, Kentucky, to Atlanta, Georgia, operated on behalf of Delta Connection by Comair.  On the morning of August 27, 2006, at around 06:07 EDT, the Bombardier Canadair Regional Jet 100ER that was being used for the flight crashed while attempting to take off from Blue Grass Airport in Fayette County, Kentucky, 4 mi west of the central business district of the City of Lexington. 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. 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. Larnaca International Airport (Greek: Διεθνής Aερολιμένας Λάρνακας "Diethnís Aeroliménas Lárnakas" Turkish: "Larnaka Uluslararası Havaalanı" ) (IATA: LCA, ICAO: LCLK) is an international airport located 4 km southwest of Larnaca, Cyprus.  Larnaca International Airport is Cyprus' main international gateway and the largest of the country's two commercial airports, the other being Paphos International Airport on the island's southwestern coast.  In July 2016 Larnaca airport was renamed "Larnaca International Airport - Glafcos Clerides” in honour of former President of the Republic Glafcos Clerides. The Aviation Museum of Kentucky is an aviation museum located at the Blue Grass Airport in Lexington, Kentucky.  Incorporated in April 1995, and opened to the public in August of the same year, it includes 12000 sqft of exhibit space, a library, and an aircraft restoration and repair shop.  The museum is the home of the "Kentucky Aviation Hall of Fame". Flower Alley (foaled May 7, 2002) is an American Thoroughbred racehorse.  He was bred at Bona Terra Farms by George Brunacini, who was killed in the August 27, 2006, crash of Comair Flight 5191 at Blue Grass Airport in Lexington, Kentucky. New York State Route 12F (NY 12F) is an east–west state highway in Jefferson County, New York, in the United States.  It extends for 6.89 mi from an intersection with NY 180 in the town of Hounsfield to a junction with U.S. Route 11 (US 11) and NY 12 in the city of Watertown.  The route follows a parallel routing to that of NY 12E between the vicinity of the village of Dexter and the city of Watertown.  While NY 12E runs along the north side of the Black River through this area, NY 12F follows the southern bank.  Just east of NY 180, NY 12F serves Watertown International Airport. Owen Roberts International Airport (IATA: GCM, ICAO: MWCR) is an airport located in Grand Cayman, Cayman Islands.  It is the main international airport for the Cayman Islands as well as the main base for Cayman Airways.  The airport is named after British Royal Air Force (RAF) Wing Commander Owen Roberts, a pioneer of commercial aviation in the country, and is one of the two entrance ports to the Cayman Islands.  Owen Roberts International Airport was the only international airport remaining in the Caribbean to have an open-air observation "waving gallery" until January 2017 when it was closed due to reconstruction.  The new upgraded Owen Roberts International Airport terminal will no longer have an observation "waving gallery". Tribhuvan International Airport (Nepali: त्रिभुवन अन्तर्राष्ट्रिय विमानस्थल , IATA: KTM, ICAO: VNKT ) is an international airport in Kathmandu, Nepal.  The airport is about six kilometres from the city centre, in the Kathmandu valley.  It is the sole international airport in Nepal, though Nijgadh International Airport has been proposed as a second.  The airport has served as an airfield since 1949, and was inaugurated in 1955 by King Mahendra.  It received its current name in 1964.  Originally a grass runway, it was re-laid in concrete in 1957 and has been extended several times.  The first jet aircraft landed at Tribhuvan in 1967 and regular jet operations commenced in 1972. Piarco International Airport (IATA: POS, ICAO: TTPP) , and frequently shortened to Piarco International, Piarco Airport, or simply Piarco; is an international airport serving the island of Trinidad and is one of two international airports in Trinidad and Tobago.  The airport is located 30 km east of Downtown Port of Spain, located in the adjacent town of Piarco.  It is the seventh busiest airport in the Caribbean in terms of passengers served and third busiest in the English-speaking Caribbean, after Sangster International Airport and Lynden Pindling International Airport.  The airport is also the primary hub and operating base for the country's national airline, as well as the Caribbean's largest airline, Caribbean Airlines.
Answer: United States