Question: How long does a high speed train take from Shanghai to the host city of the 2020 Winter Olympics?

full_context: Document 1: Express trains in India: The Duronto Express trains introduced in 2009 (which run between major cities without any intermediate halts) are projected to be the fastest trains in India when new services are introduced with a higher speed limit of 120 - 130 km / h. Despite being limited to a lower speed limit, they take as much time as a Rajdhani or Shatabdi on the same route, courtesy the non-stop nature of their journey. Rajdhani Express which was introduced in 1969 to connect New Delhi with the state capitals in India, travels at speeds up to 130 km / h.
Document 2: High-speed rail: State planning for high - speed railway began in the early 1990s, and the country's first high - speed rail line, the Qinhuangdao -- Shenyang Passenger Railway, was built in 1999 and opened to commercial operation in 2003. This line could accommodate commercial trains running at up to 200 km / h (120 mph). Planners also considered Germany's Transrapid maglev technology and built the Shanghai Maglev Train, which runs on a 30.5 km (19.0 mi) track linking the city and its international airport. The maglev train service began operating in 2004 with trains reaching a top speed of 431 km / h (268 mph), and remains the fastest high - speed service in the world. Maglev, however, was not adopted nationally and all subsequent expansion features high - speed rail on conventional tracks.
Document 3: List of Olympic Games host cities: In 2022, Beijing will become the only city that has held both the summer and the winter Olympic Games. Nine cities will have hosted the Olympic Games more than once: Athens (1896 and 2004 Summer Olympics), Paris (1900, 1924 and 2024 Summer Olympics), London (1908, 1948 and 2012 Summer Olympics), St. Moritz (1928 and 1948 Winter Olympics), Lake Placid (1932 and 1980 Winter Olympics), Los Angeles (1932, 1984 and 2028 Summer Olympics), Innsbruck (1964 and 1976 Winter Olympics), Tokyo (1964 and 2020 Summer Olympics) and Beijing (2008 Summer Olympics and 2022 Winter Olympics). In addition, Stockholm hosted the 1912 Summer Olympics and the equestrian portion of the 1956 Summer Olympics. London became the first city to have hosted three Games with the 2012 Summer Olympics. Paris will become the second city to do this with the 2024 Summer Olympics, followed by Los Angeles as the third in 2028. The United States has hosted a total of eight Olympic Games, more than any other country, followed by France with five editions. Canada, Germany, Italy, Japan, and the United Kingdom have each hosted three Games.
Document 4: 2022 Winter Olympics: The 2022 Winter Olympics, officially known as the XXIV Olympic Winter Games (French: Les XXIV Jeux olympiques d'hiver; Chinese: 第二十四届冬季奥林匹克运动会; pinyin: Dì Èrshísì Jiè Dōngjì Àolínpǐkè Yùndònghuì), and commonly known as Beijing 2022, is an international winter multi-sport event that will take place in Beijing and towns in the neighboring Hebei province, People's Republic of China, from 4 to 20 February 2022.
Document 5: High-speed rail in India: India does not have any railways that can be classified as high - speed rail (HSR) by international standards, i.e. railways with operational speeds exceeding 200 km / h (120 mph). The current fastest train in India is the Gatimaan Express with a top speed of 160 km / h (99 mph), which only runs between Delhi and Jhansi.
Document 6: 2020 Summer Olympics: The 2020 Summer Olympics, officially known as the Games of the XXXII Olympiad (Japanese: 第三十二回オリンピック競技大会, Hepburn: Dai Sanjūni - kai Orinpikku Kyōgi Taikai) and commonly known as Tokyo 2020, is a forthcoming international multi-sport event that is scheduled to take place from 24 July to 9 August 2020. Tokyo was selected as the host city during the 125th IOC Session in Buenos Aires on 7 September 2013. This will be the second time the Summer Games have been held in Tokyo, the first time being the 1964 Summer Olympics, and the fourth time that Japan has hosted the Olympics overall, following the Winter Olympics held in Sapporo in 1972 and Nagano in 1998. They will be the second of three consecutive Olympic Games to be held in East Asia, following the 2018 Winter Olympics in Pyeongchang, South Korea, and preceding the 2022 Winter Olympics in Beijing, China.
Document 7: Beijing–Shanghai high-speed railway: Under former Minister of Railways Liu Zhijun, the railway line was the first one designed for a maximum speed of 380 km / h in commercial operations. The non-stop train from Beijing South to Shanghai Hongqiao was expected to finish the 1,305 kilometres (811 mi) journey in 3 hours and 58 minutes, averaging 329 kilometres per hour (204 mph), making it the fastest scheduled train in the world, compared to 9 hours and 49 minutes on the fastest trains running on the parallel conventional railway. But following Liu Zhijun's dismissal in February 2011, several major changes were announced. First, trains would be slowed to a maximum speed of 300 km / h (186 mph), reducing operating costs. At this speed, the fastest trains would take 4 hours and 48 minutes to travel from Beijing South to Shanghai Hongqiao, making one stop at Nanjing South. Additionally, a slower class of trains running at 250 km / h (155 mph) would be operated, making more stops and charging lower fares. On September 21, 2017, 350 km / h operation was restored with the introduction of China Standardized EMU, reducing travel times between Beijing and Shanghai to about 4 hours 30 minutes on the fastest scheduled trains.
Document 8: Shanghai–Hangzhou high-speed railway: The Shanghai–Hangzhou high-speed railway (), also known as the Huhang high-speed railway or Huhang passenger railway is a high-speed rail line in China between Shanghai and Hangzhou, Zhejiang. The line is in length and designed for commercial train service at . It was built in 20 months and opened on October 26, 2010. The line shortened travel time between the two cities from 78 to 45 minutes. The line is also used by trains departing Shanghai's terminals for Nanchang, Changsha, Guiyang, and Kunming making it part of the Shanghai–Kunming High-Speed Railway. It has made the proposed Shanghai–Hangzhou Maglev Line unlikely.
Document 9: 2022 Winter Olympics: The 2022 Winter Olympics, officially known as the XXIV Olympic Winter Games (French: Les XXIVeme Jeux olympiques d'hiver) (Chinese: 第二十四届冬季奥林匹克运动会; pinyin: Dì Èrshísì Jiè Dōngjì Àolínpǐkè Yùndònghuì), and commonly known as Beijing 2022, is a multi-sport event that will take place in Beijing and towns in the neighboring Hebei province, China from 4 to 20 February 2022. It will be the third consecutive Olympic Games held in East Asia, after Pyeongchang 2018 and Tokyo 2020. Having previously hosted the 2008 Summer Olympics, Beijing will become the first city to ever host both the Summer and the Winter Olympic Games. It will also become the largest city ever to host the Winter Olympics, a distinction currently held by Vancouver which hosted the 2010 Winter Olympics.
Document 10: China at the Olympics: The People's Republic of China has hosted the Games on one occasion, with a second Games scheduled for 2022. Beijing will be the first city to host both Summer and Winter Olympics.
Document 11: Eurostar: The service is operated by eighteen - car Class 373 / 1 trains and sixteen - car Class 374 trains which run at up to 300 kilometres per hour (186 mph) on a network of high - speed lines. The LGV Nord line in France opened before Eurostar services began in 1994, and newer lines enabling faster journeys were added later -- HSL 1 in Belgium and High Speed 1 in southern England. The French and Belgian parts of the network are shared with Paris -- Brussels Thalys services and also with TGV trains. In the United Kingdom the two - stage Channel Tunnel Rail Link project was completed on 14 November 2007 and renamed High Speed 1, when the London terminus of Eurostar transferred from Waterloo International to St Pancras International.
Document 12: 2022 Winter Olympics: The 2022 Winter Olympics, officially known as the XXIV Olympic Winter Games (French: Les XXIV Jeux olympiques d'hiver; Chinese: 第二十四届冬季奥林匹克运动会; pinyin: Dì Èrshísì Jiè Dōngjì Àolínpǐkè Yùndònghuì), and commonly known as Beijing 2022, is an international winter multi-sport event that is scheduled to take place from 4 to 20 February 2022, in Beijing and towns in the neighboring Hebei province, People's Republic of China.
Document 13: Beijing–Shanghai high-speed railway: The Beijing -- Shanghai High - Speed Railway (or Jinghu High - Speed Railway from its Chinese name) is a 1,318 - kilometre (819 mi) long high - speed railway that connects two major economic zones in the People's Republic of China, the Bohai Economic Rim and the Yangtze River Delta. Construction began on April 18, 2008, and a ceremony to mark the completion of track laying was held on November 15, 2010. The line opened to the public for commercial service on June 30, 2011. This rail line is the world's longest high - speed line ever constructed in a single phase. It is China's most profitable high speed rail line, reporting a 6.6 billion yuan net operational profit in 2015.
Document 14: 2022 Winter Olympics: The 2022 Winter Olympics, officially known as the XXIV Olympic Winter Games (French: Les XXIV Jeux olympiques d'hiver; Chinese: 第二十四届冬季奥林匹克运动会; pinyin: Dì Èrshísì Jiè Dōngjì Àolínpǐkè Yùndònghuì), and commonly known as Beijing 2022, is an international winter multi-sport event that is scheduled to take place from 4 to 20 February 2022, in Beijing and towns in the neighbouring Hebei province, People's Republic of China.
Document 15: 2008 Summer Olympics: Seven years after the 2008 Games, Beijing was awarded the 2022 Winter Olympics. It will thus be the first city to host both the Summer and Winter Games.
ground_truth: 4 hours 30 minutes on the fastest scheduled trains
sub_queries: where will the 2020 winter olympics be held Answer: Beijing
how long does the high speed train take from shanghai to Beijing Answer: 4 hours 30 minutes on the fastest scheduled trains