Context_1 : International Consolidated Airlines Group, S.A., often shortened to IAG, is an Anglo-Spanish multinational airline holding company with its operational headquarters in London, England and its registered office in Madrid, Spain. It was formed in January 2011 after a merger agreement between British Airways and Iberia, the flag carrier airlines of the United Kingdom and Spain respectively. As British Airways was the larger company, those holding shares in British Airways at the time of the merger were given 55% of the shares in the new, merged company. British Airways and Iberia ceased to be independent companies and instead became 100% owned subsidiaries of IAG. It is the sixth-largest airline company in the world, producing €22.567 billion revenue in 2016. The company is listed on the London Stock Exchange and the Madrid Stock Exchange. It is a constituent of the FTSE 100 Index and IBEX 35 Index. Context_2 : Heathrow Terminal 5 is an airport terminal at Heathrow Airport, the main airport serving London. Opened in 2008, the main building in the complex is the largest free-standing structure in the United Kingdom. Terminal 5 is currently used exclusively as one of the three global hubs of International Airlines Group, served by British Airways and Iberia, with the others being London Gatwick South and Madrid Barajas Terminal 4. Prior to 2012, the terminal was used solely by British Airways. Context_3 : British Airways (BA) is the largest airline in the United Kingdom based on fleet size, or the second largest, behind easyJet, when measured by passengers carried. The airline is based in Waterside near its main hub at London Heathrow Airport. In January 2011 BA merged with Iberia, creating the International Airlines Group (IAG), a holding company registered in Madrid, Spain. IAG is the world's third-largest airline group in terms of annual revenue and the second-largest in Europe. It is listed on the London Stock Exchange and in the FTSE 100 Index. Context_4 : Sir Roderick David "Rod" Stewart, {'1': ", '2': ", '3': ", '4': "} (born 10 January 1945) is a British rock singer and songwriter. Born and raised in London, he is of Scottish and English ancestry. Stewart is one of the best-selling music artists of all time, having sold over 100 million records worldwide. He has had six consecutive number one albums in the UK and his tally of 62 UK hit singles includes 31 that reached the top ten, six of which gained the #1 position. Stewart has had 16 top ten singles in the US, with four reaching #1 on the "Billboard" Hot 100. He was knighted in the 2016 Birthday Honours for services to music and charity. Context_5 : Intra Airways Limited was a private, British independent airline formed in 1969. Initially, it was a charter airline operating passenger and cargo charters from the Channel Islands to the United Kingdom and Continental Europe. Scheduled services commenced in 1971, linking Jersey with Staverton. The airline also established an associated engineering company at Exeter Airport. In 1979, Intra Airways merged with Express Air Freight (C.I.) to form Jersey European Airways. The new entity was initially absorbed into Air Bridge Carriers (ABC), a Field Aviation/Hunting Group company. It subsequently left the Field Aviation/Hunting Group as a result of the demerger of Express Air Services, which had acquired Express Air Freight's cargo operation. Context_6 : Murchison Cirque ( ) is a glacier-filled cirque between Kuno Cirque and Arkell Cirque on the south side of the Read Mountains, Shackleton Range. Photographed from the air by the U.S. Navy, 1967, and surveyed by British Antarctic Survey (BAS), 1968-71. In association with the names of geologists grouped in this area, named by the United Kingdom Antarctic Place-Names Committee (UK-APC) in 1971 after Sir Roderick Impey Murchison (1792–1871), British geologist; President, Royal Geographical Society, 1843–44, 1851–52, and 1855–58; Director-General, Geological Survey of Great Britain, 1855-71. Context_7 : In geology, the Llandeilo Group is the middle subdivision of the British Ordovician rocks. It was first described and named by Sir Roderick Murchison from the neighborhood of Llandeilo in Carmarthenshire. In the type area it consists of a series of slaty rocks, shales, calcareous flagstones and sandstones; the calcareous middle portion is sometimes termed the Llandeilo limestone; and in the upper portion volcanic rocks are intercalated. Context_8 : Sir Roderick Ian Eddington AO (born 2 January 1950 in Perth, Western Australia) is an Australian businessman. He is currently chair of the government body Infrastructure Australia, a director of News Corporation, continuing his long association with that company, and has served in other senior positions including as CEO of British Airways. Context_9 : Sir Martin Faulkner Broughton (born 15 April 1947) is a British businessman and Deputy Chairman of International Airlines Group. Formed in January 2011, IAG is the parent company of British Airways, Iberia and Vueling. It is a Spanish registered company with shares traded on the London Stock Exchange and Spanish Stock Exchanges. The corporate head office for IAG is in London, UK.. He is also a managing partner at Sports Investment Partners. He is a former chairman of Liverpool Football Club and also served as President of the Confederation of British Industry. Context_10 : British Overseas Airways Corporation (BOAC) was the British state-owned airline created in 1940 by the merger of Imperial Airways and British Airways Ltd. It continued operating overseas services throughout World War II. After the passing of the Civil Aviation Act of 1946, European and South American services passed to two further state-owned airlines, British European Airways (BEA) and British South American Airways (BSAA). BOAC absorbed BSAA in 1949, but BEA continued to operate British domestic and European routes for the next quarter century. A 1971 Act of Parliament merged BOAC and BEA with effect from 31 March 1974, forming today's British Airways. fact_1 : Sir Roderick Ian Eddington AO (born 2 January 1950 in Perth, Western Australia) is an Australian businessman. fact_2 : British Airways (BA) is the largest airline in the United Kingdom based on fleet size, or the second largest, behind easyJet, when measured by passengers carried. fact_3 :  In January 2011 BA merged with Iberia, creating the International Airlines Group (IAG), a holding company registered in Madrid, Spain. Answer: 1950
Output: What is the year of the event which occured first, Sir Roderick Eddington was born, or British Airways merged with Iberia?