Question: What is the name of the airport in the city where District 3 is located?

full_context: Document 1: Tân Định Church: The church architecture features Roman style architecture. It is the second largest church in Ho Chi Minh City, after the Saigon Notre-Dame Basilica (Vietnamese, Nhà thờ Đức Bà Sài Gòn) in District 1.
Document 2: 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 3: 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 4: 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 5: St. Joseph's Cathedral, Hanoi: Construction began in 1886, with the architectural style described as resembling Notre Dame de Paris. The church was one of the first structures built by the French colonial government in Indochina when it opened in December 1886. It is the oldest church in Hanoi.
Document 6: 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 7: 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 8: Cửa Bắc Church: Cua Bac Church () is a Roman Catholic church in Hanoi, Vietnam. Originally named as Church of Martyrs (), the church was built in 1932 by the French administration of Indochina as a part of the Hanoi's urban plan supervised by Ernest Hébrard. Today, Cua Bac Church is one of the three major churches of Hanoi, together with Ham Long Church and Saint Joseph Cathedral. In November, 2006, the Cua Bac Catholic Church became the venue of joint worship service of the Vietnamese Catholics and Protestants with participation of the United States President George W. Bush, who was on an official visit to Vietnam.
Document 9: 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 10: Warsaw: The city is the seat of a Roman Catholic archdiocese (left bank of the Vistula) and diocese (right bank), and possesses various universities, most notably the Polish Academy of Sciences and the University of Warsaw, two opera houses, theatres, museums, libraries and monuments. The historic city-centre of Warsaw with its picturesque Old Town in 1980 was listed as a UNESCO World Heritage Site. Other main architectural attractions include the Castle Square with the Royal Castle and the iconic King Sigismund's Column, St. John's Cathedral, Market Square, palaces, churches and mansions all displaying a richness of colour and architectural detail. Buildings represent examples of nearly every European architectural style and historical period. Warsaw provides many examples of architecture from the gothic, renaissance, baroque and neoclassical periods, and around a quarter of the city is filled with luxurious parks and royal gardens.
Document 11: Paris: Almost all Protestant denominations are represented in Paris, with 74 evangelical churches from various denominations, including 21 parishes of the United Protestant Church of France and two parishes of the Church of Jesus Christ of the Latter-Day Saints. There are several important churches for the English-speaking community: the American Church in Paris, founded in 1814, was the first American church outside the United States; the current church was finished in 1931. The Saint George's Anglican Church in the 16th arrondissement is the principal Anglican church in the city.
Document 12: 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 13: Shrine of Our Lady of Health: The Shrine of Our Lady of Our Health, Hyderabad is the biggest octagonal church in Asia. It is one of the oldest Roman Catholic Churches of Hyderabad and is dedicated to Blessed Virgin Mary. It is situated near to Mahaveer Hospital, Masab Tank, Hyderabad and is in A.C. Guards, Khairtabad. In this church, the birthday of Blessed Virgin Mary is celebrated on 8 September every year. On the day of the feast and during the feast lakhs of people visit the Shrine to pay their respects to Blessed Virgin Mary. Every year the celebrations start with the Flag Hoisting on 29 August, after which a Novena to Our Lady Of Health is held daily in the evenings, when a parish from Hyderabad or Secundrabad comes to host the Holy Mass. After the mass, there is a procession with the Statue of Our Lady Of Health out in the grounds of the Church after which Benediction takes place. Even on First Saturday of every month, there's a Holy Mass conducted during which the Statue of Our Lady Of Health is taken out in the grounds of the Church where Benediction takes place and thousands of people attend the mass.
Document 14: Pantheon, Rome: It is one of the best - preserved of all Ancient Roman buildings, in large part because it has been in continuous use throughout its history, and since the 7th century, the Pantheon has been used as a church dedicated to ``St. Mary and the Martyrs ''(Latin: Santa Maria ad Martyres) but informally known as`` Santa Maria Rotonda''. The square in front of the Pantheon is called Piazza della Rotonda. The Pantheon is a state property, ruled by Italy's Ministry of Cultural Heritage and Activities and Tourism through the Polo Museale del Lazio; in 2013 it was visited by over 6 million people.
Document 15: Catholic Church: The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with more than 1.299 billion members worldwide. As one of the oldest religious institutions in the world, it has played a prominent role in the history and development of Western civilisation. The church is headed by the Bishop of Rome, who is known as the Pope. The church's doctrines are summarised in the Nicene Creed. Its central administration, the Holy See, is in the Vatican City, an enclave within Rome, Italy.
ground_truth: Tân Sơn Nhất International Airport
sub_queries: District 3 >> located in the administrative territorial entity Answer: Ho Chi Minh City
what is the name of the airport in Ho Chi Minh City Answer: Tân Sơn Nhất International Airport