Question: Heathrow Terminal 3 is the base for an airline established in what year?

Context paragraphs:
Virgin Atlantic: Virgin Atlantic, a trading name of Virgin Atlantic Airways Limited and Virgin Atlantic International Limited, is a British airline with its head office in Crawley, United Kingdom.  The airline was established in 1984 as British Atlantic Airways, and was originally planned by its co-founders Randolph Fields and Alan Hellary to fly between London and the Falkland Islands.  Soon after changing the name to Virgin Atlantic Airways, Fields sold his shares in the company after disagreements with Sir Richard Branson over the management of the company.  The maiden flight from London Gatwick to Newark Liberty International Airport took place on 22 June 1984.

Soekarno–Hatta International Airport Terminal 3: Soekarno–Hatta International Airport Terminal 3 (also known as Terminal 3 Ultimate) is an airport terminal of Soekarno–Hatta International Airport serving Greater Jakarta, Indonesia.  It is located on the east-northern side of the airport.  Terminal 3 has a different style than other terminals of the airport.  Terminal 1 and 2 were built with incorporation of the local architecture into the design, but Terminal 3 is built in contemporary modern design with environmental friendly and traditional sense.  The terminal was first named as Terminal 3 Ultimate but later it was decided to integrate with the old Terminal 3.  It currently houses Garuda Indonesia, Saudi Arabian Airlines, Korean Air, XiamenAir, China Airlines and Vietnam Airlines flights until further completion when all international flights (except budget carriers) will be moved here.  The terminal is expected to be fully operational by September, 2017.

Dubai International Terminal 3: Dubai International Airport Terminal 3 is an airport terminal at Dubai International Airport serving Dubai, UAE.  When completed and opened on 14 October 2008, it was the largest building in the world and is currently the world's largest airport terminal, with over 1713000 m2 of space.  The partly underground Terminal 3 was built at a cost of US$4.5 billion, exclusively for Emirates and has a capacity of 43 million passengers.  However it was announced on 6 September 2012 that Terminal 3 would no longer be Emirates exclusive, as Emirates and Qantas had set up an extensive code sharing agreement.  Qantas would be the second and only one of two airlines to fly in and out of Terminal 3.  This deal also allows Qantas to use the A380 Dedicated Concourse A.  The terminal has 5 Airbus A380 gates at Concourse B, and 18 at Concourse A.

Heathrow Terminal 5 station: Heathrow Terminal 5 is a shared railway and London Underground station serving London Heathrow Airport Terminal 5.  The station serves as a terminus for the Heathrow Express services to Paddington in central London, and for Piccadilly line services towards Cockfosters.  The station is staffed entirely by Heathrow Express staff, unlike the other underground stations serving Terminal 4 and Terminals 2 & 3.

Heathrow Terminal 4: Heathrow Terminal 4 is an airport terminal at Heathrow Airport, the main airport serving London, United Kingdom, situated to the south of the southern runway, next to the cargo terminal.  It is connected to Heathrow Terminals 2 and 3 by the vehicular Heathrow Cargo Tunnel, and by rail with the Heathrow Terminal 4 tube station and Heathrow Terminal 4 railway station.

Heathrow Terminals 2 &amp; 3 tube station: Heathrow Terminals 2 & 3 is a London Underground station at Heathrow Airport on the Heathrow branch of the Piccadilly line, and currently serves Heathrow Terminal 2 and Terminal 3.  The station was named Heathrow Terminals 1, 2 & 3 until January 2016, when the station was renamed to reflect the closure of Heathrow Terminal 1.  The station is situated in Travelcard Zone 6.

Heathrow Terminal 2: Heathrow Terminal 2, also known as The Queen's Terminal, is an airport terminal at Heathrow Airport, the main airport serving London, United Kingdom.  The new development was originally named "Heathrow East Terminal", and occupies the sites where the previous Terminal 2 and the "Queen's Building" stood.  It was designed by Luis Vidal + Architects and opened on 4 June 2014.  The original Terminal 2 opened in 1955 as the "Europa Building" and was the airport's oldest terminal.

Heathrow Terminal 3: Heathrow Terminal 3 is an airport terminal at Heathrow Airport, serving London, the capital city of the United Kingdom.  Terminal 3 is currently used by Oneworld members and a few other non-affiliated airlines.  It is also the base for Virgin Atlantic.

Heathrow Terminal 4 railway station: Heathrow Terminal 4 is a railway station serving London Heathrow Terminal 4 at London Heathrow Airport.

Heathrow Terminal 1: Heathrow Terminal 1 is a disused airport terminal at London Heathrow Airport that was in operation between 1968 to 2015.  When it was officially opened by Queen Elizabeth II in April 1969 it was the largest new airport terminal in western Europe.  At the point of its closure on 29 June 2015 it had only been handling twenty daily flights by British Airways to nine destinations.  In May 2017 the entire contents of the terminal was put up for auction.  The footprint of Terminal 1 was planned to be used for construction of the second phase of London Heathrow Terminal 2.

Supporting paragraphs: Heathrow Terminal 3 Virgin Atlantic
Answer: 1984