Question: The Colombian airline that has been the national airline and flag carrier of Colombia since 1919 is wholly owned by a company headquartered in what country?
Related documents: [0]  [DOC] Avianca S.A. (acronym in Spanish for "Aerovías del Continente Americano S.A. "), Airways of the American Continent, is a Colombian airline that has been the national airline and flag carrier of Colombia since 5 December 1919, when it was initially registered under the name SCADTA. It is headquartered in Bogotá, D.C. with its main hub at El Dorado International Airport. Avianca also comprises a group of seven Latin American airlines, whose operations are combined to function as one airline using a code sharing system. Avianca is the largest airline in Colombia and second largest in Latin America. Avianca together with its subsidiaries has the most extensive network of destinations in Latin America. It is wholly owned by Synergy Group S.A., a South American holding company established by Germán Efromovich and specializing in air transport. It is listed on the Colombia Stock Exchange. [END] 
[1]  [DOC] Synergy Group Corp. is a South American conglomerate created and owned by Germán Efromovich, an entrepreneur holding multiple citizenship of Brazil, Colombia and Poland. The group is headquartered in Rio de Janeiro, Brazil. It operates several airlines in South America, among which are Avianca Holdings, with a 66.66% stake, and is active in the exploration of oil and natural gas throughout the region. Additionally, it operates hydroelectric power plants, participates in the construction of telecommunications infrastructure, shipbuilding and technical inspections, radiochemistry, radiopharmaceuticals, agriculture and hospitality. [END] 
Answer: 
Brazil
Brazil