Question: The world's largest global airline alliances in which United is a founding member was founded when?

<P0-S0> United Continental Holdings, Inc. (formerly UAL Corporation) is a publicly traded airline holding company headquartered in the Willis Tower in Chicago. <P0-S1>  UCH owns and operates United Airlines, Inc. <P0-S2>  The company is the successor of UAL Corporation, which agreed to change its name to United Continental Holdings in May 2010, when a merger agreement was reached between United and Continental Airlines. <P0-S3>  Its stock trades under the UAL symbol. <P0-S4>  To effect the merger, Continental shareholders received 1.05 shares of UAL stock for each Continental share, effectively meaning Continental was acquired by UAL Corporation; at the time of closing, it was estimated that United shareholders owned 55% of the merged entity and Continental shareholders owned 45%. <P0-S5>  The company or its subsidiary airlines also have several other subsidiaries. <P0-S6>  Once completely combined, United became the world's largest airline, as measured by revenue passenger miles. United is a founding member of the Star Alliance. <SEP> <P1-S0> Kingfisher Airlines was established in 2003. <P1-S1>  It is owned by the Bengaluru based United Breweries Group. <P1-S2>  The airline started commercial operations on 9 May 2005 with a fleet of four new Airbus A320-200s operating a flight from Mumbai to Delhi. <P1-S3>  It started its international operations on 3 September 2008 by connecting Bengaluru with London. <P1-S4>  Kingfisher's head office is located in Kingfisher House Western Express Highway Vile Parle (E) Mumbai – 400099 India and its registered office is located in UB City, Bangalore. <P1-S5>  Its head office was previously in the Kingfisher House in Vile Parle (East), Mumbai. <P1-S6>  In 2012 Vijay Mallya was trying to sell the Vile Parle Kingfisher House. <P1-S7>  The airline had shut down its operations when on 20 October 2012 the DGCA suspended its flying license. <P1-S8>  This suspension had been due to failure to give an effective response to the show-cause notice issued by DGCA. <P1-S9>  However, The airline had locked out its employees for several days before this suspension. <P1-S10>  On 25 October 2012, the employees agreed to return to work. <P1-S11>  On 7 June 2010 Kingfisher became a member elect of the Oneworld airline alliance when it signed a formal membership agreement. <P1-S12>  Kingfisher confirmed on 20 December 2011 that it will join the Oneworld airline alliance on 10 February 2012. <P1-S13>  Kingfisher would have been the first Indian carrier to join one of the big airline alliances. <P1-S14>  However, on 3 February 2012, owing to bad financial situation and two days after the International Air Transport Association (IATA) clearing house suspended Kingfisher Airlines; the airlines participation to Oneworld has been put on hold. <SEP> <P2-S0> Star Alliance is one of the world's largest global airline alliances. Founded on 14 May 1997, its current CEO is Jeffrey Goh and its headquarters is located in Frankfurt am Main, Germany. <P2-S1>  s of November 2016 , Star Alliance is the largest global alliance by passenger count with 689.98 million, ahead of SkyTeam (665.4 million) and Oneworld (557.4 million). <P2-S2>  Its slogan is "The Way The Earth Connects". <SEP> <P3-S0> Pan American World Airways, known from its founding until 1950 as Pan American Airways and commonly known as Pan Am, was the principal and largest international air carrier in the United States from 1927 until its collapse on December 4, 1991. <P3-S1>  Founded in 1927 as a scheduled air mail and passenger service operating between Key West, Florida, and Havana, Cuba, the airline became a major company credited with many innovations that shaped the international airline industry, including the widespread use of jet aircraft, jumbo jets, and computerized reservation systems. <P3-S2>  It was also a founding member of the International Air Transport Association (IATA), the global airline industry association. <P3-S3>  Identified by its blue globe logo ("The Blue Meatball"), the use of the word "Clipper" in aircraft names and call signs, and the white pilot uniform caps, the airline was a cultural icon of the 20th century. <P3-S4>  In an era dominated by flag carriers that were wholly or majority government-owned, it was also the unofficial overseas flag carrier of the United States. <P3-S5>  During most of the jet era, Pan Am's flagship terminal was the Worldport located at John F. Kennedy International Airport in New York City.