paragraph_text: Paris is a major rail, highway, and air transport hub. The Syndicat des transports d'Île-de-France (STIF), formerly Syndicat des transports parisiens (STP), oversees the transit network in the region. The syndicate coordinates public transport and contracts it out to the RATP (operating 347 bus lines, the Métro, eight tramway lines, and sections of the RER), the SNCF (operating suburban rails, one tramway line and the other sections of the RER) and the Optile consortium of private operators managing 1,176 bus lines.

paragraph_text: Oakland is the largest city in the East Bay and the third largest in the Bay Area. The city serves as a major transportation hub for the U.S. West Coast, and its port is the largest in Northern California. Increased population has led to the growth of large edge cities such as Fremont, Hayward, Concord, Berkeley, Richmond and Walnut Creek.

paragraph_text: Vlado Misajlovski (born 21 January 1985) is a Republic of Macedonia politician. He serves as Minister of Transport and Communications in the cabinet of Nikola Gruevski since 13 May 2015, when he succeeded Mile Janakieski.

paragraph_text: The Karen Demirchyan Yerevan Subway (, "Karen Demirchyani anvan Yerevani metropoliten"; since December 1999), colloquially known as the Yerevan Metro (, ), is a rapid transit system that serves the capital of Armenia, Yerevan. Owned by the government, it is operated by the Karen Demirchyan Yerevan Subway CJSC of the Ministry of Transport and Communication of Armenia.

paragraph_text: Ashchebutak is a former air base in Russia located 40 km southeast of Novoorsk. It is an abandoned airfield; no buildings; and may have been abandoned in the 1970s.

paragraph_text: Toronto Pearson is located 22.5 kilometres (14.0 mi) northwest of Downtown Toronto, with the majority of the airport situated in the city of Mississauga, and a small portion of the airfield extending into Toronto's western district of Etobicoke. It features five runways and two passenger terminals along with numerous cargo and maintenance facilities on a site that covers 1,867 hectares (4,613 acres).Pearson Airport is the primary hub for Air Canada. It also serves as a hub for WestJet, cargo airline FedEx Express and as a base of operations for Air Transat and Sunwing Airlines. Pearson is operated by the Greater Toronto Airports Authority (GTAA) as part of Transport Canada's National Airports System, and is the largest airport in the world with facilities for United States border preclearance.An extensive network of non-stop domestic flights is operated from Toronto Pearson by several airlines to all major and many secondary cities across all provinces of Canada. As of 2019, over 75 airlines operate around 1,250 daily departures from the airport to more than 180 destinations across all six of the world's inhabited continents.

paragraph_text: Bach Mai Airfield () is a disused military airport in Thanh Xuan District, Hanoi, Vietnam, located along modern-day Le Trong Tan street. It was constructed by the French in 1917 and used by French forces until 1954; along with Gia Lam Airbase, it was one of the major logistics bases supporting French operations at Dien Bien Phu. After 1954, it was used by the Vietnamese People's Air Force and served as their air defense command and control center during the Second Indochina War, playing a part in the Cambodian–Vietnamese War as well. It is now the site of the Vietnam People's Air Force Museum, where a number of period military aircraft are on display.

paragraph_text: Johann or Johannes Bach (26 November 1604, Erfurtburied 13 May 1673, Erfurt) was a German composer and musician of the Baroque. He was the father of the so-called "Erfurt line" of Bach family musicians.

paragraph_text: The Marshall Islands are served by the Marshall Islands International Airport in Majuro, the Bucholz Army Airfield in Kwajalein, and other small airports and airstrips.

paragraph_text: Maturín () is a city in Venezuela, the capital of the Venezuelan state of Monagas and a centre for instrumental exploration and development of the petroleum industry in Venezuela. The metropolitan area of Maturín has a population of 401,384 inhabitants. Maturín is also a busy regional transportation hub, connecting routes from the northeastern coast to the Orinoco Delta and the Gran Sabana.

paragraph_text: Buraq Air (El-Buraq Air Transport Inc) is an airline with its headquarters on the grounds of Mitiga International Airport in Tripoli, Libya. It operates scheduled domestic and international services to Europe, North Africa, and the Middle East. Buraq also operates passenger and cargo charter services and flights in support of CHC. Until recently, the airline's hub was Mitiga Airport, which, although smaller than Tripoli International Airport, is much closer to the city centre of Tripoli. Its new hub is Tripoli International.

paragraph_text: Empresa de Transporte Aéreo del Perú S.A., usually known as Aeroperú, was a Peruvian airline, serving as flag carrier of Peru from 1973 to 1999. The company was headquartered in Lima, with the city's Jorge Chavez International Airport serving as its hub. Besides an extensive domestic route network, Aeroperú offered international flights to places in Latin America and the United States of America. The company had around 1,500 employees.

paragraph_text: Skagit Transportation Center is a multimodal transportation hub in Mount Vernon, Washington, United States served by Amtrak, the US national railroad-passenger system. The facility at 105 East Kincaid Street was built in 2004 to replace the former Amtrak station on 725 College Way, which is currently used by the Burlington Northern and Santa Fe Railroad.

paragraph_text: Paris is a major international air transport hub with the 4th busiest airport system in the world. The city is served by three commercial international airports: Paris-Charles de Gaulle, Paris-Orly and Beauvais-Tillé. Together these three airports recorded traffic of 96.5 million passengers in 2014. There is also one general aviation airport, Paris-Le Bourget, historically the oldest Parisian airport and closest to the city centre, which is now used only for private business flights and air shows.

paragraph_text: Kaiwara is a small town in the Chickballapur district of Karnataka state, located northeast of Bangalore, India. Kaiwara is a popular place to visit, as it is very close to Bangalore (about 65 km away), the capital of Karnataka. Free boarding (prasada) and well-maintained, low-cost accommodation is available at the ashram. Chintamani Town is the nearest Taluk Centre and a business hub of this part of Karnataka.

paragraph_text: The El Paso and Northeastern Railway (EP&NE) was a short line railroad that was built around the beginning of the twentieth century to help connect the industrial and commercial center at El Paso, Texas, with physical resources and the United States' national transportation hub in Chicago. Founded by Charles Eddy, the EP&NE was the primary railroad in a system organized under the New Mexico Railway and Coal Company (NMRy&CCo), a holding company which owned several other railroads and also owned mining and industrial properties served by the lines.

paragraph_text: Wilhelm Friedrich Ernst Bach (24 May 1759 – 25 December 1845) was the eldest son of Johann Christoph Friedrich Bach and the only grandson of Johann Sebastian Bach to gain fame as a composer. He was music director to Frederick William II of Prussia. He said, "Heredity can tend to run out of ideas."

paragraph_text: London is a major international air transport hub with the busiest city airspace in the world. Eight airports use the word London in their name, but most traffic passes through six of these. London Heathrow Airport, in Hillingdon, West London, is the busiest airport in the world for international traffic, and is the major hub of the nation's flag carrier, British Airways. In March 2008 its fifth terminal was opened. There were plans for a third runway and a sixth terminal; however, these were cancelled by the Coalition Government on 12 May 2010.

paragraph_text: Uruca District, the seventh "district" of San José Canton, Costa Rica, comprises an important industrial and commercial area of San José. Commonly known as La Uruca, it's the second biggest district by area (after Pavas), and recognized as a heavily congested transportation hub.

paragraph_text: A grouping of the three Vietnamese regions of Tonkin (north), Annam (centre), and Cochinchina (south) with Cambodia was formed in 1887. Laos was added in 1893 and the leased Chinese territory of Guangzhouwan in 1898. The capital was moved from Saigon (in Cochinchina) to Hanoi (Tonkin) in 1902 and again to Da Lat (Annam) in 1939. In 1945 it was moved back to Hanoi.

Question: Where was the capital before the location where Bach Main Airfield is located?
Answer: Saigon