Context: Celestair is an alliance of Air Burkina , Air Mali and Air Uganda ., Ouagadougou Airport is an airport in the center of the city of Ouagadougou in Burkina Faso. It was built in the 1960s, and it is approximately 1.5 km southeast of the main commercial area. The site itself is approximately 4.8 km in length, 0.5 km in width at its narrowest point, and covers an area of approximately 426 hectares. Its runway is 3 000 m long. When the airport was built it was on the southern boundary of the city. Ouagadougou has since experienced rapid urbanization and the airport is now surrounded by urban development., An air operator's certificate (AOC) is the approval granted by a national aviation authority (NAA) to an aircraft operator to allow it to use aircraft for commercial purposes. This requires the operator to have personnel, assets and system in place to ensure the safety of its employees and the general public. The certificate will list the aircraft types and registrations to be used, for what purpose and in what area - specific airports or geographic region., Burkina Faso is a landlocked country in Africa around in size. It is surrounded by six countries: Mali to the north; Niger to the east; Benin to the southeast; Togo and Ghana to the south; and Ivory Coast to the southwest. Its capital is Ouagadougou. In 2014 its population was estimated at just over 17.3 million. Burkina Faso is a francophone country and French is an official language of government and business. Formerly called the Republic of Upper Volta, the country was renamed "Burkina Faso" on 4 August 1984 by then-President Thomas Sankara. Residents of Burkina Faso are known as "Burkinabé"., Ouagadougou (Mossi: ) is the capital of Burkina Faso and the administrative, communications, cultural and economic centre of the nation. It is also the country's largest city, with a population of 1,475,223 (""). The city's name is often shortened to "Ouaga". The inhabitants are called "ouagalais". The spelling of the name "Ouagadougou" is derived from the French orthography common in former French African colonies., Niger (or ), officially the Republic of Niger, is a landlocked country in Western Africa, named after the Niger River. Niger is bordered by Libya to the northeast, Chad to the east, Nigeria and Benin to the south, Burkina Faso and Mali to the west, and Algeria to the northwest. Niger covers a land area of almost 1,270,000 km, making it the largest country in West Africa, with over 80 percent of its land area covered by the Sahara Desert. The country's predominantly Islamic population of about 19 million is mostly clustered in the far south and west of the country. The capital city is Niamey, located in the far-southwest corner of Niger., Senegal, officially the Republic of Senegal, is a country in West Africa. Senegal is bordered by Mauritania in the north, Mali to the east, Guinea to the southeast, and Guinea-Bissau to the southwest. Senegal also borders The Gambia, a country occupying a narrow sliver of land along the banks of the Gambia River, which separates Senegal's southern region of Casamance from the rest of the country. Senegal also shares a maritime border with Cape Verde. Senegal's economic and political capital is Dakar. It is the westernmost country in the mainland of the Old World, or Afro-Eurasia, and owes its name to the Senegal River, which borders it to the east and north. The name "Senegal" comes from the Wolof "Sunuu Gaal", which means "Our Boat". Senegal covers a land area of almost and has an estimated population of about 13 million. The climate is Sahelian, but there is a rainy season., Mali, officially the Republic of Mali, is a landlocked country in Africa. Mali is the eighth-largest country in Africa, with an area of just over . The population of Mali is 14.5 million. Its capital is Bamako. Mali consists of eight regions and its borders on the north reach deep into the middle of the Sahara Desert, while the country's southern part, where the majority of inhabitants live, features the Niger and Senegal rivers. The country's economy centers on agriculture and fishing. Some of Mali's prominent natural resources include gold, being the third largest producer of gold in the African continent, and salt. About half the population lives below the international poverty line of $1.25 (U.S.) a day. A majority of the population (90%) are Muslims., Togo, officially the Togolese Republic, is a country in West Africa bordered by Ghana to the west, Benin to the east and Burkina Faso to the north. It extends south to the Gulf of Guinea, where its capital Lomé is located. Togo covers , making it one of the smallest countries in Africa, with a population of approximately 7.5 million., Air Burkina SA is the national airline of Burkina Faso, operating scheduled services to one domestic destination, Bobo-Dioulasso, as well as regional services to Togo, Benin, Mali, Niger, Côte d'Ivoire, Senegal and Ghana. It is majority owned by an AKFED/IPS consortium, and operates from its main base at Ouagadougou Airport., Ghana, officially the Republic of Ghana is a unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic Ocean, in the subregion of West Africa. Spanning a land mass of 238,535 km², Ghana is bordered by the Ivory Coast in the west, Burkina Faso in the north, Togo in the east and the Gulf of Guinea and Atlantic Ocean in the south. "Ghana" means "Warrior King" in the Soninke language., Bobo-Dioulasso is a city in Burkina Faso with a population of about 537,728; it is the second largest city in the country, after Ouagadougou, Burkina Faso's capital. The name means "home of the Bobo-Dioula"; while it was likely coined by French colonists to reflect the languages of the two major groups in the population, it does not capture the complex identity and ethnicity of the location., Uganda (or ), officially the Republic of Uganda, is a landlocked country in East Africa. It is bordered to the east by Kenya, to the north by South Sudan, to the west by the Democratic Republic of the Congo, to the south-west by Rwanda, and to the south by Tanzania. Uganda is the world's second most populous landlocked country after Ethiopia. The southern part of the country includes a substantial portion of Lake Victoria, shared with Kenya and Tanzania. Uganda is in the African Great Lakes region. Uganda also lies within the Nile basin, and has a varied but generally a modified equatorial climate., Benin (or -; ), officially the Republic of Benin and formerly Dahomey, is a country in West Africa. It is bordered by Togo to the west, Nigeria to the east, and Burkina Faso and Niger to the north. A majority of the population live on its small southern coastline on the Bight of Benin, part of the Gulf of Guinea in the northernmost tropical portion of the Atlantic Ocean. The capital of Benin is Porto-Novo, but the seat of government is in Cotonou, the country's largest city and economic capital. Benin covers an area of 114,763 square kilometers and its population in 2015 was estimated to be approximately 10.88 million. Benin is a tropical, sub-Saharan nation, highly dependent on agriculture, with substantial employment and income arising from subsistence farming., Meridiana Africa Airlines (Uganda) Limited, trading as Air Uganda, was a privately owned airline in Uganda from 2007-2014, which suspended its operations due to its air operator's certificate (AOC) being revoked by the Uganda Civil Aviation Authority (CAA)., Subject: celestair, Relation: instance_of, Options: (A) 1 (B) 25 (C) aircraft (D) airline (E) airport (F) aviation (G) aviation authority (H) boat (I) border (J) capital (K) city (L) coast (M) continent (N) country (O) day (P) democracy (Q) desert (R) destination (S) economy (T) eight (U) government (V) gulf (W) king (X) lake (Y) limited (Z) line ([) mass (\) nation (]) ocean (^) operator (_) part (`) population (a) public (b) rapid (c) republic (d) river (e) season (f) six (g) size (h) square (i) subregion (j) two (k) urban development (l) will
Output: airline