Question: Which franchise carrier operates aircraft in full British Airways livery and has its main base at OR Tambo International Airport, Johannesburg?

full_context: Document 1: Interair South Africa: Inter Aviation Services (Pty) Ltd, which traded as Interair South Africa, is a formally privately owned airline based in Johannesburg, South Africa. It operated scheduled passenger services from Johannesburg to regional destinations in Africa. Its main base was O. R. Tambo International Airport, Johannesburg.
Document 2: British Airways destinations: British Airways is one of few carriers serving destinations across all six inhabited continents. Following is a list of destinations the airline flies to, as of 2017 ; terminated destinations are also listed. The list does not include cities served solely by affiliated regional carriers, and some terminated destinations may now be served either via franchise or through codeshare agreements with other carriers. Each destination is provided with the name of the country served, the name of the airport served, and both the International Air Transport Association (IATA) three-letter designator (IATA airport code) and the International Civil Aviation Organization (ICAO) four-letter designator (ICAO airport code).
Document 3: Air Partner: Air Partner Plc is a global aviation services group. The Group is structured into four reporting divisions: Commercial Jet air charter, Private Jet Charter, air freight and Baines Simmons. The Commercial Jet division charters large airliners to move groups of any size. They also provide remarketing programmes for all types of commercial and corporate aircraft. Air Partner is headquartered alongside Gatwick airport in the United Kingdom. Air Partner operates 24/7 year-round and has 20 offices across Europe, North America, the Middle East and Asia. The company is publicly listed on the London Stock Exchange as LSE: [ AIR] , and is also ISO 9001:2008 compliant for commercial airline and private jet solutions worldwide.
Document 4: Comair (South Africa): Comair Limited is an airline based in South Africa that operates scheduled services on domestic routes as a British Airways franchisee (and an affiliate member of the Oneworld airline alliance). It also operates as a low-cost carrier under its own kulula.com brand. Its main base is OR Tambo International Airport, Johannesburg, and has focus cities at Cape Town International Airport and King Shaka International Airport. Its headquarters are near OR Tambo in the Bonaero Park area of Kempton Park, Ekurhuleni, Gauteng.
Document 5: O. R. Tambo International Airport: O. R. Tambo International Airport (IATA: JNB, ICAO: FAOR) (ORTIA) is a major international airport in Kempton Park, Ekurhuleni, Gauteng, South Africa, near the city of Johannesburg and, to a lesser extent, the executive capital Pretoria. It serves as the primary airport for domestic and international travel to/from South Africa and is Africa's busiest airport with a capacity to handle up to 28 million passengers annually with non-stop flights to all continents except Antarctica. The airport is the hub of South Africa's largest international and domestic carrier, South African Airways (SAA), and a number of smaller local airlines. The airport handled a total of over 20 million passengers in 2016.
Document 6: British Airways franchise destinations: British Airways flies to destinations on every inhabited continent. In addition to the comprehensive list of destinations offered by British Airways itself, many more towns and cities can be reached through BA's franchise and subsidiary operations. Together with wholly owned subsidiary BA CityFlyer, franchise carriers Sun Air and Comair operate aircraft in full British Airways livery, offer full BA service and staff wear BA uniform. Bookings are made through British Airways and the carriers are affiliate members of the oneworld alliance.
Document 7: African International Airways: African International Airways was an all-cargo airline based in Johannesburg, South Africa. The airline operated international chartered cargo flights out of Kent International Airport, United Kingdom, OR Tambo International Airport, Johannesburg and Ostend-Bruges International Airport, Belgium, most of which were on behalf of Intavia Limited.
Document 8: South African Express: South African Express Airways SOC Ltd, known as South African Express or simply SA Express, is a state-owned airline based in South Africa that started operations on 24 April 1994. Although the airline is operationally independent of South African Airways, its flights are incorporated within the strategic alliance with South African Airways. The airline has its head office at Airways Park, Jones Road, next to O.R. Tambo International Airport in Kempton Park, Ekurhuleni, Gauteng.
Document 9: CityJet destinations: As of September 2017, CityJet operates scheduled flights to the following destinations. Additionally, it serves several more destinations on wet-lease agreements with Air France (which ends on 31 October 2017), KLM, Brussels Airlines and Scandinavian Airlines.
Document 10: Oneworld: Oneworld (marketed as oneworld; CRS: *O) is an airline alliance founded on 1 February 1999. The alliance's stated objective is to be the first-choice airline alliance for the world's frequent international travelers. Its central alliance office is currently based in New York City in the United States. Its member airlines include Air Berlin, American Airlines, British Airways, Cathay Pacific, Finnair, Iberia, Japan Airlines, LATAM Airlines, Malaysia Airlines, Qantas, Qatar Airways, Royal Jordanian, S7 Airlines and SriLankan Airlines, plus some 21 affiliated airlines. As of August 2016, Oneworld is the third largest global alliance in terms of passengers with more than 557.4 million passengers carried, behind Star Alliance (689.98 M) and SkyTeam (665.4 M). Its slogan is "An alliance of the world's leading airlines working as one."
Document 11: Egoli Air: Egoli Air is an airline based in Johannesburg, South Africa. It operates charter flights both domestically and to destinations throughout Africa. Its main base is OR Tambo International Airport, Johannesburg.
Document 12: Cathay Pacific: Cathay Pacific () () is the flag carrier of Hong Kong, with its head office and main hub located at Hong Kong International Airport. The airline's operations and subsidiaries have scheduled passenger and cargo services to 180 destinations in 44 countries worldwide including codeshares and joint ventures. Cathay Pacific operates a fleet of wide-body aircraft, consisting of Airbus A330, Airbus A350, and Boeing 777 equipment. Its wholly owned subsidiary, Cathay Dragon, operates to 44 destinations in the Asia-Pacific region from its Hong Kong base. In 2010, Cathay Pacific, together with Dragonair (rebranded Cathay Dragon), carried nearly 27 million passengers and over 1.8 million tons of cargo and mail.
Document 13: Airlink Cargo: Airlink Cargo is a division of SA Airlink (Pty) Ltd and provides air freight transport services to over 35 destinations across Southern Africa from its base in Johannesburg. The division was formed in 2011 after one British Aerospace Jetstream 41 passenger aircraft belonging to parent company Airlink was converted for freight operations, followed the next year by a second aircraft. Freight is also carried on Airlink Cargo's behalf by Airlink and Swaziland Airlink across the region. Airlink Cargo is headquartered on the grounds of their hub OR Tambo International Airport in Johannesburg, South Africa.
Document 14: South African Airways: South African Airways (SAA) is the flag carrier of South Africa. Its headquarters are in Airways Park on the grounds of OR Tambo International Airport in Kempton Park, Ekurhuleni, Gauteng. The airline flies to 56 destinations worldwide, in partnership with SA Express, SA Airlink and its low-cost carrier, Mango, within South Africa and across the continent, and eight intercontinental routes from its Johannesburg hub at OR Tambo International Airport, using a fleet of 54 aircraft. Musa Zwane has been acting CEO since November 2015.
Document 15: British Airways: 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.
ground_truth: Comair