Question: Congo Express was in a partnership with the state-owned airline in South Africa that started operations on what date?

Context paragraphs:
Air Gabon: Air Gabon was the national, state-owned airline of Gabon, operating out of Libreville International Airport to a variety of destinations across Western and Southern Africa, as well as to Europe, South America and the Middle East.

Caribbean Airlines: Caribbean Airlines Limited is the state-owned airline and flag carrier of Trinidad and Tobago.  Headquartered in Iere House in Piarco, the airline operates flights to the Caribbean, North America, Central America and South America from its base at Piarco International Airport.  Presently Caribbean Airlines employs more than 1,700 people and is the largest airline in the Caribbean.

Aerolíneas Argentinas: Aerolíneas Argentinas (English: Argentine Airlines ), formally "Aerolíneas Argentinas S.A.", is Argentina's largest airline and the country's flag carrier.  The airline was created in 1949 from the merger of four companies, and started operations in  1950 (1950-) .  A consortium led by Iberia took control of the airline in 1990, and Grupo Marsans acquired the company and its subsidiaries in 2001, following a period of severe financial difficulties that put the airline on the brink of closure.  The company has been run by the Argentine government since late 2008, when the country regained control of the airline after it was taken over from the Spanish owners.  s of 2014 , Aerolíneas Argentinas was state-owned.  It has its headquarters in Buenos Aires.

Virgin Express: N.V. Virgin Express S.A. was an airline created within the Virgin Group.  It operated flights mainly to southern Europe from its hub at Brussels Airport.  Ticket sales were mainly through the Internet.  The airline has merged with SN Brussels Airlines to form Brussels Airlines which started operations on 25 March 2007 Virgin Express' head office was in Building 116 at Brussels Airport in Zaventem, Belgium, near Brussels.

British Overseas Airways Corporation: 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.

Big Sky Express: Big Sky Express was an airline based in Brisbane, Queensland, Australia.  It was established and started operations in 2004 and was an Australian community airline operating scheduled domestic passenger services in the northwestern part of New South Wales.  It ceased operations in 2006.

SN Brussels Airlines: SN Brussels Airlines (SNBA) was a national airline of Belgium, which mainly operated from Brussels Airport.  SNBA was the trading name of the Belgian airline Delta Air Transport.  SNBA was a full-service airline, connecting Brussels with the rest of Europe.  It also flew to Africa, continuing Sabena's extensive network there.  The airline merged with Virgin Express into Brussels Airlines which started operations on 25 March 2007 The airline had its head office in Airport Building 117 in Brussels Airport, Zaventem, near Brussels.

Afriqiyah Airways: Afriqiyah Airways (Arabic: الخطوط الجوية الأفريقية‎ ‎ "Al-Khuṭūṭ al-Jawwiyyah al-Afrīqiyyah") is a state-owned airline based in Tripoli, Libya.  Before the 17th of February 2011 revolution it operated domestic services between Tripoli and Benghazi, and international scheduled services to over 25 countries in Europe, Africa, Asia and the Middle East; since the end of the war, it has been rebuilding its business.  Afriqiyah Airways' main base is Tripoli International Airport, and the airline is a member of the Arab Air Carriers Organization.

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.

Congo Express: Congo Express was a regional airline in the Democratic Republic of the Congo that commenced operations on 1 February 2010 on two routes flying out of Kinshasa.  It ceased its business activities in 2012, since the aircraft have been returned to South African Express and the homepage is not operational anymore.  It flew only one route, between Kinshasa and Lubumbashi.  It was a partnership between BizAfrika Congo, a Congolese company, and South African Express, a South African regional airline.  The airline had its head office in the "Bâtiment Banque Congolaise" in central Lubumbashi.

Supporting paragraphs: Congo Express South African Express
Answer: 24 April 1994