Question: Which airport is in the city where Ngo Dinh Diem died?

full_context: Document 1: Seoul: Incheon International Airport, opened in March 2001 in Yeongjong island, is now responsible for major international flights. Incheon International Airport is Asia's eighth busiest airport in terms of passengers, the world's fourth busiest airport by cargo traffic, and the world's eighth busiest airport in terms of international passengers in 2014. In 2016, 57,765,397 passengers used the airport.
Document 2: Leaders of the Vietnam War: Ho Chi Minh was the key figure and held the main leadership of North Vietnam during both wars in the country. He remained as a great source of inspiration for the Vietnamese who were fighting for a united Vietnam as in his wish after he officially stepped aside in 1965 and even after his death in 1969. The final offensive against Saigon -- the capital of South Vietnam in 1975 was named after him (the Ho Chi Minh Campaign). Vietnam was reunified under the Communist rule after the fall of Saigon in April 1975, nearly 30 years after Ho's declaration of independence and 6 years after his death. Soon after that, Saigon was renamed Ho Chi Minh city in honour of his vast contributions to Vietnam.
Document 3: Tan Son Nhat International Airport: Tân Sơn Nhất International Airport (IATA: SGN, ICAO: VVTS) (Vietnamese: Sân bay quốc tế Tân Sơn Nhất, Vietnamese: Cảng hàng không quốc tế Tân Sơn Nhất) is the busiest airport in Vietnam with 32.5 million passengers in 2016, serving Ho Chi Minh City as well as the rest of southeastern Vietnam. As of January 2017, it had a total capacity of only 25 million passengers, which has caused constant congestion and sparked debate for expanding or building a new airport. The airport's IATA code, SGN, is derived from the city's former name of Saigon.
Document 4: New Delhi: Indira Gandhi International Airport, situated to the southwest of Delhi, is the main gateway for the city's domestic and international civilian air traffic. In 2012-13, the airport was used by more than 35 million passengers, making it one of the busiest airports in South Asia. Terminal 3, which cost ₹96.8 billion (US$1.4 billion) to construct between 2007 and 2010, handles an additional 37 million passengers annually.
Document 5: Saigon Bridge: Saigon Bridge, known as Newport Bridge () before 1975, is a bridge crossing the Saigon River, connecting Bình Thạnh District and District 2, Ho Chi Minh City, on the Hanoi Highway. The bridge has four lanes for cars and two lanes for motorcycles and bicycles. It was the only bridge linking District 1 to the new Thu Thiem New Urban Area in District 2 until the Thủ Thiêm Bridge opened in 2008 and the Saigon River Tunnel opened in 2011. The bridge was one of the most vital gateways for vehicles traveling from northern and central Vietnam to the city, and therefore was a key point of contention during the Tet Offensive in 1968 and the Fall of Saigon in 1975. In 2013, a new parallel bridge, Saigon 2 Bridge, was opened to ease congestion on the bridge.
Document 6: Nguyễn Huy Thiệp: Nguyễn Huy Thiệp (Hanoi, 29 April 1950-) is a Vietnamese writer. He has been described as Vietnam's most influential writer. In 1992, before Bảo Ninh (1993) and Dương Thu Hương (1996), he was the first to write a major novel taking the gloss off the "American War" experience.
Document 7: Vietnam Airlines: While the airline had launched flights to London-Gatwick, Beijing and Shanghai, as of April 2018 there are no flights to Mumbai, Doha, and Brisbane. The airline also plans to re-open flights to Berlin, and commence flights to Adelaide, Perth, Amsterdam, Milan, Prague, Mandalay, Dalian, Nanjing, Hangzhou and African cities; by 2020, Vietnam Airlines is expected to serve 53 international destinations, up from 27 in 2011. By 2020, Vietnam Airlines plans to increase its annual revenue to US$7 billion – up from $1.86 billion in 2010 – by carrying 620,000 tonnes of cargo and 35 million passengers, using a fleet of 163 aircraft (later revised to 41 million passengers using 170 aircraft). It aims to capture a 45% market share of Vietnam's aviation market. During its first 15 years of operation, from 1996 to 2010, Vietnam Airlines carried a total of 82 million passengers on 678,550 flights. In addition, Vietnam Airlines plans to transfer most of its international operations from its current hub, Tan Son Nhat International Airport, to the proposed Long Thanh International Airport. With a cost of approximately US$6 billion, the airport will, according to Vietnamese authorities, help Vietnam Airlines boost its operations internationally as it seeks to bypass Thailand as the dominant gateway to the Greater Mekong region. London operations were transferred from Gatwick to Heathrow in 2015; the airline plans to operate its new Boeing 787-9 aircraft to this destination, starting from .
Document 8: Ho Chi Minh City: Ho Chi Minh City Thành phố Hồ Chí Minh Saigon or Sài Gòn Municipality Thành phố trực thuộc trung ương Clockwise, from left to right: Bến Thành Market, Ho Chi Minh City Hall, District 1 view from Saigon river, Municipal Theatre, Notre - Dame Cathedral Basilica of Saigon, Independence Palace Seal Nickname (s): Pearl of the Far East Location in Vietnam and Southern Vietnam Coordinates: 10 ° 46 ′ 36.8 ''N 106 ° 42 ′ 02.9'' E ﻿ / ﻿ 10.776889 ° N 106.700806 ° E ﻿ / 10.776889; 106.700806 Coordinates: 10 ° 46 ′ 36.8 ''N 106 ° 42 ′ 02.9'' E ﻿ / ﻿ 10.776889 ° N 106.700806 ° E ﻿ / 10.776889; 106.700806 Country Vietnam Central district District 1 Founded as Gia Định 1698 Renamed to Ho Chi Minh City 1976 Founded by Nguyễn Hữu Cảnh Divisions 19 Urban districts, 5 Suburban districts Government Type Special - class Secretary of Communist Party Nguyễn Thiện Nhân Chairman of People's Committee Nguyễn Thành Phong Chairman of People's Council Nguyễn Thị Quyết Tâm Area Total 2,096.56 km (809.23 sq mi) Elevation 19 m (63 ft) Population (2016) Total 8,426,100 Rank 1st Density 4,000 / km (10,000 / sq mi) GDP (PPP) (2015 estimate) Total US $127.8 billion Per capita US $15,977 GRDP (nominal) (2016) Total US $45.73 billion Per capita US $5,428 Time zone ICT (UTC + 07: 00) Area codes 8 (until 16 Jul 2017) 28 (from 17 Jun 2017) Website hochiminhcity.gov.vn
Document 9: Vũ Văn Mẫu: Vũ Văn Mẫu (25 July 1914 – 20 August 1998) was the last Prime Minister of South Vietnam and served under President Dương Văn Minh leadership.
Document 10: Dwight D. Eisenhower: In the years that followed, Eisenhower increased the number of U.S. military advisors in South Vietnam to 900 men. This was due to North Vietnam's support of "uprisings" in the south and concern the nation would fall. In May 1957 Diem, then President of South Vietnam, made a state visit to the United States for ten days. President Eisenhower pledged his continued support, and a parade was held in Diem's honor in New York City. Although Diem was publicly praised, in private Secretary of State John Foster Dulles conceded that Diem had been selected because there were no better alternatives.
Document 11: Dương Văn Nhựt: Dương Văn Nhựt (Mỹ Tho, born c.1920) was a in the North Vietnamese army during the Vietnam War. He was also brother of Dương Văn Minh, the last president of South Vietnam.
Document 12: Mumbai: The Chhatrapati Shivaji International Airport (formerly Sahar International Airport) is the main aviation hub in the city and the second busiest airport in India in terms of passenger traffic. It handled 36.6 million passengers and 694,300 tonnes of cargo during FY 2014–2015. An upgrade plan was initiated in 2006, targeted at increasing the capacity of the airport to handle up to 40 million passengers annually and the new terminal T2 was opened in February 2014.The proposed Navi Mumbai International airport to be built in the Kopra-Panvel area has been sanctioned by the Indian Government and will help relieve the increasing traffic burden on the existing airport.The Juhu Aerodrome was India's first airport, and now hosts the Bombay Flying Club and a heliport operated by state-owned Pawan Hans.
Document 13: Houston: The primary city airport is George Bush Intercontinental Airport (IAH), the tenth-busiest in the United States for total passengers, and twenty eighth-busiest worldwide. Bush Intercontinental currently ranks fourth in the United States for non-stop domestic and international service with 182 destinations. In 2006, the United States Department of Transportation named IAH the fastest-growing of the top ten airports in the United States. The Houston Air Route Traffic Control Center stands on the George Bush Intercontinental Airport grounds.
Document 14: Vũ Ngọc Nhạ: Vũ Ngọc Nhạ (Thái Bình, 3 March 1928 - Ho Chi Minh City, 7 August 2002) was a Vietnamese communist spy who served as an advisor to South Vietnamese presidents Ngô Đình Diệm and Nguyễn Văn Thiệu.
Document 15: Leaders of the Vietnam War: Ho Chi Minh whose real name is Nguyen Sinh Cung and also known as Nguyen Tat Thanh and Nguyen Ai Quoc was a Vietnamese revolutionary leader following the path of communism.
ground_truth: Tân Sơn Nhất International Airport
sub_queries: Ngo Dinh Diem >> place of death Answer: Ho Chi Minh City
what is the name of the airport in Ho Chi Minh City Answer: Tân Sơn Nhất International Airport