Question: How long does the high speed train take to get from Shanghai to the city where Laoshan Velodrome is located?

full_context: Document 1: 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 2: Laoshan Velodrome: The Laoshan Velodrome () is a velodrome that is located in Laoshan, Shijingshan District, Beijing, China. It was built for the 2008 Summer Olympics. The venue was tested during the UCI Track World Cup in December 2007.
Document 3: 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 4: 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 5: 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 6: Nanjing: In 2005, in order to host The 10th National Game of People's Republic of China, there was a new stadium, Nanjing Olympic Sports Center, constructed in Nanjing. Compared to Wutaishan Sports Center, which the major stadium's capacity is 18,500, Nanjing Olympic Sports Center has a more advanced stadium which is big enough to seat 60,000 spectators. Its gymnasium has capacity of 13,000, and natatorium of capacity 3,000.
Document 7: Channel Tunnel: The Channel Tunnel Rail Link (CTRL), now called High Speed 1, runs 69 miles (111 km) from St Pancras railway station in London to the tunnel portal at Folkestone in Kent. It cost £5.8 billion. On 16 September 2003 the prime minister, Tony Blair, opened the first section of High Speed 1, from Folkestone to north Kent. On 6 November 2007 the Queen officially opened High Speed 1 and St Pancras International station, replacing the original slower link to Waterloo International railway station. High Speed 1 trains travel at up to 300 km / h (186 mph), the journey from London to Paris taking 2 hours 15 minutes, to Brussels 1 hour 51 minutes.
Document 8: 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 9: 2008 Summer Olympics torch relay: After being lit at the birthplace of the Olympic Games in Olympia, Greece on March 24, the torch traveled to the Panathinaiko Stadium in Athens, and then to Beijing, arriving on March 31. From Beijing, the torch was following a route passing through six continents. The torch has visited cities along the Silk Road, symbolizing ancient links between China and the rest of the world. The relay also included an ascent with the flame to the top of Mount Everest on the border of Nepal and Tibet, China from the Chinese side, which was closed specially for the event.
Document 10: 2008 Summer Olympics: The 2008 Summer Olympic Games, officially known as the Games of the XXIX Olympiad (Chinese: 第二十九届夏季奥林匹克运动会; pinyin: Dì Èrshíjiǔ Jiè Xiàjì Àolínpǐkè Yùndònghuì) and commonly known as Beijing 2008, was an international multi-sport event that was held from 8 to 24 August 2008 in Beijing, China. A total of 10,942 athletes from 204 National Olympic Committees (NOCs) competed in 28 sports and 302 events (one event more than those scheduled for the 2004 Games). This was the first time that China had hosted the Summer Olympics, but the third time that the Games had been held in East Asia, following the 1964 Olympics in Tokyo, Japan, and the 1988 Olympics in Seoul, South Korea.
Document 11: Cycling at the 2000 Summer Olympics – Men's team sprint: The men's team sprint event in cycling at the 2000 Summer Olympics was contested by twelve teams. The races were held on Sunday, September 17 at the Dunc Gray Velodrome
Document 12: 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 13: 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 14: Velódromo Panamericano: The Pan American Velodrome is a Velodrome located in Tlaquepaque, near Guadalajara, Mexico. It hosted the track cycling events at the 2011 Pan American Games. It has a capacity of 1,932, a wooden track and has been described as one of the best velodromes in Latin America. It gained UCI approval in October 2011 after removing two pillars to improve sight lines. The Velodrome is approximately 1550 metres above sea level
Document 15: Nanjing: There are two major sports centers in Nanjing, Wutaishan Sports Center and Nanjing Olympic Sports Center. Both of these two are comprehensive sports centers, including stadium, gymnasium, natatorium, tennis court, etc. Wutaishan Sports Center was established in 1952 and it was one of the oldest and most advanced stadiums in early time of People's Republic of China.
ground_truth: 4 hours 30 minutes on the fastest scheduled trains
sub_queries: What state is Laoshan Velodrome located? Answer: Beijing
how long does the high speed train take from shanghai to Beijing Answer: 4 hours 30 minutes on the fastest scheduled trains