Question: In what year did the Indian city where Northern Railway is headquartered first host the Asian Games?

full_context: Document 1: New Delhi: New Delhi is a major junction in the Indian railway network and is the headquarters of the Northern Railway. The five main railway stations are New Delhi railway station, Old Delhi, Nizamuddin Railway Station, Anand Vihar Railway Terminal and Sarai Rohilla. The Delhi Metro, a mass rapid transit system built and operated by Delhi Metro Rail Corporation (DMRC), serves many parts of Delhi and the neighbouring cities Faridabad, Gurgaon, Noida and Ghaziabad. As of August 2011, the metro consists of six operational lines with a total length of 189 km (117 mi) and 146 stations, and several other lines are under construction. It carries millions of passengers every day. In addition to the Delhi Metro, a suburban railway, the Delhi Suburban Railway exists.
Document 2: Majnu-ka-tilla: The area lies on a stretch of the National Highway 1, which is part of the historic Grand Trunk Road and the Outer Ring Road of Delhi. It is at a walkable distance from ISBT Kashmere Gate. It is approachable through the Kashmeri Gate station of the Delhi Metro, lies on both the Red (Dilshad Garden - Rithala) and Yellow Lines (Samaypur Badli - HUDA City Centre). It is a transfer station between the Red Line on the highest upper level and the Yellow Line on the lowest level. The Vidhan Sabha metro station is 1.5 km away.
Document 3: Commonwealth Games: The 2010 Commonwealth Games were held in Delhi, India. The Games cost $11 billion and are the most expensive Commonwealth Games ever. It was the first time that the Commonwealth Games were held in India, also the first time that a Commonwealth Republic hosted the games and the second time they were held in Asia after Kuala Lumpur, Malaysia in 1998. A total of 6,081 athletes from 71 Commonwealth nations and dependencies competed in 21 sports and 272 events. The final medal tally was led by Australia. The host nation India achieved its best performance ever in any sporting event, finishing second overall. Rwanda made its Games debut.
Document 4: Hyderabad: The most commonly used forms of medium distance transport in Hyderabad include government owned services such as light railways and buses, as well as privately operated taxis and auto rickshaws. Bus services operate from the Mahatma Gandhi Bus Station in the city centre and carry over 130 million passengers daily across the entire network.:76 Hyderabad's light rail transportation system, the Multi-Modal Transport System (MMTS), is a three line suburban rail service used by over 160,000 passengers daily. Complementing these government services are minibus routes operated by Setwin (Society for Employment Promotion & Training in Twin Cities). Intercity rail services also operate from Hyderabad; the main, and largest, station is Secunderabad Railway Station, which serves as Indian Railways' South Central Railway zone headquarters and a hub for both buses and MMTS light rail services connecting Secunderabad and Hyderabad. Other major railway stations in Hyderabad are Hyderabad Deccan Station, Kachiguda Railway Station, Begumpet Railway Station, Malkajgiri Railway Station and Lingampally Railway Station. The Hyderabad Metro, a new rapid transit system, is to be added to the existing public transport infrastructure and is scheduled to operate three lines by 2015.
Document 5: New Delhi: New Delhi has one of India's largest bus transport systems. Buses are operated by the state-owned Delhi Transport Corporation (DTC), which owns largest fleet of compressed natural gas (CNG)-fueled buses in the world. Personal vehicles especially cars also form a major chunk of vehicles plying on New Delhi roads. New Delhi has the highest number of registered cars compared to any other metropolitan city in India. Taxis and Auto Rickshaws also ply on New Delhi roads in large numbers. New Delhi has one of the highest road density in India.
Document 6: New Delhi metro station: New Delhi is a station on the Yellow Line of the Delhi Metro. It is within walking distance from the Indian Railways New Delhi station. It is on the Ajmeri Gate (Platform Number 16) side of the New Delhi Railway Station.
Document 7: 2010 Commonwealth Games: The 2010 Commonwealth Games, officially known as the XIX Commonwealth Games, were held in Delhi, India, from 3 to 14 October 2010. A total of 6,081 athletes from 71 Commonwealth nations and dependencies competed in 21 sports and 272 events, making it the largest Commonwealth Games to date. It was also the largest international multi-sport event to be staged in Delhi and India, eclipsing the Asian Games in 1951 and 1982. The opening and closing ceremonies were held at the Jawaharlal Nehru Stadium, the main stadium of the event. It was the first time that the Commonwealth Games were held in India and the second time they were held in Asia after Kuala Lumpur, Malaysia in 1998. It was also the first time a Commonwealth Republic hosted the games, second in a country not presently headed by British monarch since Malaysia in 1998. The official mascot of the Games was Shera and the official song of the Games, ``Jiyo Utho Bado Jeeto '', was composed by celebrated Indian musician A.R. Rahman.
Document 8: Xiamen International Marathon: The Xiamen International Marathon, which began in 2003 and is deemed by the IAAF as a Gold Label Road Race, is famous for its coastal scenic course. The entire course follows the scenic sections of the coastal city. The 2010 edition of the race had at least 30 instances of cheating, with some runners carrying multiple timing sensors or using public transport mid-course. Judges believed this was due to students attempting to gain bonus points for their National Higher Education Entrance Examinations.
Document 9: Tuvalu: A major sporting event is the "Independence Day Sports Festival" held annually on 1 October. The most important sports event within the country is arguably the Tuvalu Games, which are held yearly since 2008. Tuvalu first participated in the Pacific Games in 1978 and in the Commonwealth Games in 1998, when a weightlifter attended the games held at Kuala Lumpur, Malaysia. Two table tennis players attended the 2002 Commonwealth Games in Manchester, England; Tuvalu entered competitors in shooting, table tennis and weightlifting at the 2006 Commonwealth Games in Melbourne, Australia; three athletes participated in the 2010 Commonwealth Games in Delhi, India, entering the discus, shot put and weightlifting events; and a team of 3 weightlifters and 2 table tennis players attended the 2014 Commonwealth Games in Glasgow. Tuvaluan athletes have also participated in the men's and women's 100 metre sprints at the World Championships in Athletics from 2009.
Document 10: Urban rail transit in India: There are currently 11 operational rapid transit (also called 'metro') systems in ten cities in India. As of November 2017, India has 425 kilometres (264 miles) of operational metro lines and 347 stations. A further 500 + km of lines are under construction. Metro rail lines in India are composed of mainly standard gauge. Projects like the Kolkata Metro and Delhi Metro used broad gauge for their earliest lines but all new projects in India are on standard gauge as rolling stock imported is of standard gauge.
Document 11: New Delhi: The city hosted the 2010 Commonwealth Games and annually hosts Delhi Half Marathon foot-race. The city has previously hosted the 1951 Asian Games and the 1982 Asian Games. New Delhi was interested  in bidding for the 2019 Asian Games but was turned down by the government on 2 August 2010 amid allegations of corruption in 2010 Commonwealth Games .
Document 12: New Delhi: The Delhi Metro is a rapid transit system serving New Delhi, Delhi, Gurgaon, Faridabad, Noida, and Ghaziabad in the National Capital Region of India. Delhi Metro is the world's 12th largest metro system in terms of length. Delhi Metro was India's first modern public transportation system, which had revolutionised travel by providing a fast, reliable, safe, and comfortable means of transport. The network consists of six lines with a total length of 189.63 kilometres (117.83 miles) with 142 stations, of which 35 are underground, five are at-grade, and the remainder are elevated. All stations have escalators, elevators, and tactile tiles to guide the visually impaired from station entrances to trains. It has a combination of elevated, at-grade, and underground lines, and uses both broad gauge and standard gauge rolling stock. Four types of rolling stock are used: Mitsubishi-ROTEM Broad gauge, Bombardier MOVIA, Mitsubishi-ROTEM Standard gauge, and CAF Beasain Standard gauge.
Document 13: Hyderabad: The most popular sports played in Hyderabad are cricket and association football. At the professional level, the city has hosted national and international sports events such as the 2002 National Games of India, the 2003 Afro-Asian Games, the 2004 AP Tourism Hyderabad Open women's tennis tournament, the 2007 Military World Games, the 2009 World Badminton Championships and the 2009 IBSF World Snooker Championship. The city hosts a number of venues suitable for professional competition such as the Swarnandhra Pradesh Sports Complex for field hockey, the G. M. C. Balayogi Stadium in Gachibowli for athletics and football, and for cricket, the Lal Bahadur Shastri Stadium and Rajiv Gandhi International Cricket Stadium, home ground of the Hyderabad Cricket Association. Hyderabad has hosted many international cricket matches, including matches in the 1987 and the 1996 ICC Cricket World Cups. The Hyderabad cricket team represents the city in the Ranji Trophy—a first-class cricket tournament among India's states and cities. Hyderabad is also home to the Indian Premier League franchise Sunrisers Hyderabad. A previous franchise was the Deccan Chargers, which won the 2009 Indian Premier League held in South Africa.
Document 14: India at the Asian Games: New Delhi, the national capital of India, has hosted the Asian Games on two occasions: the inaugural 1951 Asian Games and the 1982 Asian Games.
Document 15: Hazrat Nizamuddin railway station: Nizamuddin हज़रत निज़ामुद्दीन Rapid transit, Light rail, Commuter rail & Regional rail station Location New Delhi, Delhi India 28 ° 35 ′ 21 ''N 77 ° 15 ′ 15'' E ﻿ / ﻿ 28.58917 ° N 77.25417 ° E ﻿ / 28.58917; 77.25417 Elevation 206.7 metres (678 ft) Platforms 7 Construction Structure type Standard (on ground station) Parking Yes Other information Status Functioning Station code NZM Zone (s) Northern Railway zone Division (s) Delhi Electrified Yes Traffic Passengers (Daily) 360,000 + Location Nizamuddin Location within Delhi
ground_truth: 1951
sub_queries: What Indian city is the headquarters of the Northern Railway? Answer: New Delhi
New Delhi first hosted the Asian Games in what year? Answer: 1951