Answer the following question: Information: - Central Africa is a core region of the African continent which includes Burundi, the Central African Republic, Chad, the Democratic Republic of the Congo, and Rwanda. Middle Africa (as used by the United Nations when categorising geographic subregions) is an analogous term that includes Angola, Cameroon, the Central African Republic, Chad, the Republic of the Congo, the Democratic Republic of the Congo, Equatorial Guinea, Gabon, and Sao Tome and Principe. All of the states in the UN subregion of Middle Africa, plus those otherwise commonly reckoned in Central Africa (11 states in total), constitute the Economic Community of Central African States (ECCAS). Since its independence in 2011, South Sudan has also been commonly included in the region. - Tchibanga Airport is an airport serving the city of Tchibanga, in the Nyanga Province of Gabon. The runway is northwest of the city. - The Atlantic Ocean is the second largest of the world's oceans with a total area of about . It covers approximately 20 percent of the Earth's surface and about 29 percent of its water surface area. It separates the "Old World" from the "New World". - Nyanga province is one of Gabon 's nine provinces . The provincial capital is Tchibanga , which had a total of 14,500 inhabitants in 2004 ( slightly more than one - third of the total provincial population ) . Nyanga is the southernmost province of Gabon and is also the largest , least populated and least developed of the nine . It is bordered by Ogooue - Maritime in the northwest , Ngounie in the north , and the Congo to the south ( Kouilou Region ) and east ( Niari Region ) . The Atlantic Ocean - which is the lowest point in both Gabon and Nyanga - borders it in the west . - The Republic of the Congo, also known as the Congo Republic, West Congo, Congo-Brazzaville or simply Congo, is a country located in Central Africa. It is bordered by five countries: Gabon and the Atlantic Ocean to the west; Cameroon to the northwest; the Central African Republic to the northeast; the Democratic Republic of the Congo to the east and south; and the Angolan exclave of Cabinda to the southwest. - The Gulf of Guinea is the northeasternmost part of the tropical Atlantic Ocean between Cape Lopez in Gabon, north and west to Cape Three Points in Western region Ghana. The intersection of the Equator and Prime Meridian (zero degrees latitude and longitude) is in the gulf. - Cameroon, officially the Republic of Cameroon, is a country in Central Africa. It is bordered by Nigeria to the west; Chad to the northeast; the Central African Republic to the east; and Equatorial Guinea, Gabon, and the Republic of the Congo to the south. Cameroon's coastline lies on the Bight of Bonny, part of the Gulf of Guinea and the Atlantic Ocean. - Africa is the world's second-largest and second-most-populous continent. At about 30.3 million km (11.7 million squaremiles) including adjacent islands, it covers 6% of Earth's total surface area and 20.4 % of its total land area. With 1.1 billion people as of 2013, it accounts for about 15% of the world's human population. The continent is surrounded by the Mediterranean Sea to the north, both the Suez Canal and the Red Sea along the Sinai Peninsula to the northeast, the Indian Ocean to the southeast, and the Atlantic Ocean to the west. The continent includes Madagascar and various archipelagos. It contains 54 fully recognized sovereign states (countries), nine territories and two "de facto" independent states with limited or no recognition. - The Nyanga River, 600km, is a river that runs through southern Gabon and northern Republic of the Congo. It is the second most important river in Gabon after the Ogooue. - Tchibanga is a city in the Nyanga Province of southern Gabon, situated on the Nyanga River. It has an estimated population of 24,000 (2008). The town lies on the N6 road and is home to Tchibanga Airport and a market. It lies near the Ivela Falls. - Libreville is the capital and largest city of Gabon, in west central Africa. The city is a port on the Komo River, near the Gulf of Guinea, and a trade center for a timber region. its census population was 703,904. - An ocean (the sea of classical antiquity) is a body of saline water that composes much of a planet's hydrosphere. On Earth, an ocean is one of the major conventional divisions of the World Ocean, which covers almost 71% of its surface. These are, in descending order by area, the Pacific, Atlantic, Indian, Southern (Antarctic), and Arctic Oceans. The word "sea" is often used interchangeably with "ocean" in American English but, strictly speaking, a sea is a body of saline water (generally a division of the world ocean) partly or fully enclosed by land. - Water is a transparent and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms. Its chemical formula is HO, meaning that its molecule contains one oxygen and two hydrogen atoms, that are connected by covalent bonds. Water strictly refers to the liquid state of that substance, that prevails at standard ambient temperature and pressure; but it often refers also to its solid state (ice) or its gaseous state (steam or water vapor). It also occurs in nature as snow, glaciers, ice packs and icebergs, clouds, fog, dew, aquifers, and atmospheric humidity. - The New World is one of the names used for the Earth's Western Hemisphere, specifically the Americas (including nearby islands such as those of the Caribbean and Bermuda). - Area is the quantity that expresses the extent of a two-dimensional figure or shape, or planar lamina, in the plane. Surface area is its analog on the two-dimensional surface of a three-dimensional object. Area can be understood as the amount of material with a given thickness that would be necessary to fashion a model of the shape, or the amount of paint necessary to cover the surface with a single coat. It is the two-dimensional analog of the length of a curve (a one-dimensional concept) or the volume of a solid (a three-dimensional concept). - Gabon, officially the Gabonese Republic, is a sovereign state on the west coast of Central Africa. Located on the equator, Gabon is bordered by Equatorial Guinea to the northwest, Cameroon to the north, the Republic of the Congo on the east and south, and the Gulf of Guinea to the west. It has an area of nearly and its population is estimated at 1.5 million people. Its capital and largest city is Libreville. - Equatorial Guinea, officially the Republic of Equatorial Guinea, is a country located in Central Africa, with an area of . Formerly the colony of Spanish Guinea, its post-independence name evokes its location near both the Equator and the Gulf of Guinea. Equatorial Guinea is the only sovereign African state in which Spanish is an official language. , the country has an estimated population of over 1.2 million. - The Equator usually refers to an imaginary line on the Earth's surface equidistant from the North Pole and South Pole, dividing the Earth into the Northern Hemisphere and Southern Hemisphere. The Equator is about long; some 78.7% lies across water and 21.3% over land. - The Old World consists of Africa, Europe, and Asia, regarded collectively as the part of the world known to Europeans before contact with the Americas. It is used in the context of, and contrast with, the New World (Americas). After reading the paragraphs above, we are interested in knowing the entity with which 'nyanga province' exhibits the relationship of 'named after'. Find the answer from the choices below. Choices: - 1 - 11 - 3 - 5 - 6 - 7 - africa - angola - arctic - asia - atlantic ocean - bermuda - capital - caribbean - central - city - concept - democratic republic of the congo - earth - europe - fog - indian ocean - latitude - mediterranean sea - nigeria - north - northeast - nyanga river - point - red sea - republic of the congo - road - sea - south - south pole - water - west
Answer:
nyanga river