Instruct: Given a question, retrieve relevant documents that can help answer the question.
Query: How big is Burkina Faso?
Burkina Faso (, ; ) is a landlocked country in West Africa. It covers an area of around and 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. The July 2018 population estimate by the United Nations was 19,751,651. Burkina Faso is a francophone country, with French as the official language of government and business. Roughly 40% of the population speaks the Mossi language. Formerly called the Republic of Upper Volta (1958–1984), the country was renamed "Burkina Faso" on 4 August 1984 by then-President Thomas Sankara. Its citizens are known as "Burkinabé" ( ). Its capital is Ouagadougou.
The Mossi (or "Mole", "Mosse", sing. "Moaaga") are a people in central Burkina Faso, living mostly in the villages of the Nazinon and Nakanbe (formerly Volta) River Basin. The Mossi are the largest ethnic group in Burkina Faso, constituting more than 40% of the population, or about 6.2 million people. The other 60% of Burkina Faso's population is composed of more than 60 ethnic groups, mainly the Gurunsi, Senufo, Lobi, Bobo and Fulani. The Mossi speak the Mòoré language.
Niger or the Niger ( or ; ), officially the Republic of the Niger, is a landlocked country in West Africa named after the Niger River. Niger is bordered by Libya to the northeast, Chad to the east, Nigeria to the south, Benin to the southwest, Burkina Faso and Mali to the west, and Algeria to the northwest. Niger covers a land area of almost , making it the largest country in West Africa. Over 80% of its land area lies in the Sahara Desert. The country's predominantly Islamic population of about /1e6 round 0 million live mostly in clusters in the far south and west of the country. The capital city is Niamey, located in Niger's southwest corner.
The Bwa live in central Burkina Faso and south-east Mali, between Mali's Bani River and the Mouhoun River (Black Volta) in Burkina Faso. Their total population is approximately 300, 000. The major towns occupied by the Bwa are Houndé, Boni, Bagassi, Dossi and Pa.
At , Angola is the world's twenty-third largest country - comparable in size to Mali, or twice the size of France or of Texas. It lies mostly between latitudes 4° and 18°S, and longitudes 12° and 24°E.
In 2016, the average life expectancy in Burkina Faso was estimated at 60 for males and 61 for females which gives it a world life expectancy ranking of 166. 
In 2016, Burkina Faso had 3400 (2200 - 5000) new HIV infections and 3100 (2000 - 4500) AIDS-related deaths. There were 95 000 (77 000 - 120 000) people living with HIV in 2016, among whom 60% (49% - 74%) were accessing anti retroviral therapy. Among pregnant women living with HIV, 83% (65% - >95%) were accessing treatment or prophylaxis to prevent transmission of HIV to their children. An estimated <1000 (<500 - <1000) children were newly infected with HIV due to mother-to-child transmission. The key populations most affected by HIV in Burkina Faso are sex workers, with an HIV prevalence of 16.2%, gay men and other men who have sex with men, with an HIV prevalence of 3.6% and prisoners, with an HIV prevalence of 3%. 
In Burkina Faso, three out of four girls and women have undergone FGM (Female Genital Mutiliation) . But work to reverse this trend is proving successful: community meetings, peer education and a law banning the practice have helped to reduce the numbers of girls getting cut by 31%.The World Bank approved an $80 million International Development Association (IDA)* grant and $20 million from the Global Financing Facility (GFF) in Support of Every Woman, Every Child, to support the government’s efforts to strengthen health services in Burkina Faso. The Governments of Norway and Burkina Faso, the World Bank Group, and the Bill & Melinda Gates Foundation will co-host the GFF replenishment conference slated for November 6, 2018 in Oslo, Norway..
With more than 10 million inhabitants, Kinshasa is the second largest francophone city in the world after Paris. It is the capital of the most populous francophone country in the world, the Democratic Republic of the Congo, where an estimated 24 million people (40% of the total population) can speak French (essentially as a second language). Contrary to Abidjan where French is the first language of a large part of the population, in Kinshasa French is only a second language, and its status of "lingua franca" is shared with Lingala. Kinshasa French also differs from other African French variants, for it has some Belgian French influences, due to colonisation. People of different African mother tongues living in Kinshasa usually speak Lingala to communicate with each other in the street, but French is the language of businesses, administrations, schools, newspapers and televisions. French is also the predominant written language.
Angola (; ), officially the Republic of Angola (; Kikongo, Kimbundu and ), is a west-coast country of south-central Africa. It is the seventh-largest country in Africa, bordered by Namibia to the south, the Democratic Republic of the Congo to the north, Zambia to the east, and the Atlantic Ocean to the west. Angola has an exclave province, the province of Cabinda that borders the Republic of the Congo and the Democratic Republic of the Congo. The capital and largest city of Angola is Luanda.
Liberia (), officially the Republic of Liberia, is a country on the West African coast. It is bordered by Sierra Leone to its northwest, Guinea to its north, Ivory Coast to its east, and the Atlantic Ocean to its south-southwest. It covers an area of and has a population of around 4,700,000 people. English is the official language and over 20 indigenous languages are spoken, representing the numerous ethnic groups who make up more than 95% of the population. The country's capital and largest city is Monrovia.
Kinshasa is both a city ("ville" in French) and a province, one of the 26 provinces of the Democratic Republic of the Congo. Its status is thus similar to that of Paris which is both a city and one of the 101 departments of France. The "ville-province" of Kinshasa is divided into four districts which are further divided into 24 "communes" (municipalities), which in turn contain various quarters (332 in total). Maluku, the rural province to the east of the urban area, accounts for 79% of the 9.965 km2 total land area of the "ville-province", with a population of 200,000–300,000.Under the Köppen climate classification, Kinshasa has a Tropical wet and dry climate. Its lengthy rainy season spans from October through May, with a relatively short dry season, between June and September. Kinshasa lies south of the equator, so its dry season begins around its winter solstice, which is in June. This is in contrast to African cities further north featuring this climate where the dry season typically begins around January. Kinshasa's dry season is slightly cooler than its wet season, though temperatures remain relatively constant throughout the year.
Kinshasa, the capital of the Democratic Republic of the Congo, is the third-largest city in Africa with 10 million inhabitants. The film shows how some people living there have managed to forge one of the most complex systems of human cooperation ever invented: a symphony orchestra (Orchestre Symphonique Kimbanguiste) performing composers such as Handel, Verdi, Beethoven. "Kinshasa Symphony" shows Kinshasa in all its diversity, speed, colour, vitality and energy. It is a film about the Congo, about the people of Kinshasa and about music.
Bulgaria occupies a portion of the eastern Balkan peninsula, bordering five countries—Greece and Turkey to the south, Macedonia and Serbia to the west, and Romania to the north. The land borders have a total length of , and the coastline has a length of . Its total area of ranks it as the world's 105th-largest country. Bulgaria's geographic coordinates are 43° N 25° E. The most notable topographical features are the Danubian Plain, the Balkan Mountains, the Thracian Plain, and the Rhodope Mountains. The southern edge of the Danubian Plain slopes upward into the foothills of the Balkans, while the Danube defines the border with Romania. The Thracian Plain is roughly triangular, beginning southeast of Sofia and broadening as it reaches the Black Sea coast.
The West African country of Benin has the highest national average of twinning, with a rate of 27.9 twins per 1,000 births.
French is the sole official language of the Ivory Coast. In Abidjan, largest city of the country, 57.6% of the inhabitants over 15 can read and write French, and another 11% can speak it but not write it. The French language is seen as essential by a large majority, especially for dealing with the government and in education. Two thirds of respondents report feeling Francophone. French plays an important role in all areas of public and private life across the whole country. French is increasingly seen as an Ivorian language, and a local variety distinct from standard French has emerged ().
Angola – country in southern Africa bordered by Namibia on the south, the Democratic Republic of the Congo on the north, and Zambia on the east; its west coast is on the Atlantic Ocean with Luanda as its capital city. The exclave province of Cabinda has borders with the Republic of the Congo and the Democratic Republic of the Congo. The country has vast mineral and petroleum reserves, and its economy has on average grown at a two-digit pace since the 1990s, especially since the end of the civil war. In spite of this, standards of living remain low, and life expectancy and infant mortality rates in Angola are among the worst-ranked in the world.Geography of Angola
Angola, officially the Republic of Angola, is a country in south-central Africa bordered by Namibia on the south, Democratic Republic of the Congo on the north, and Zambia on the east; its west coast is on the Atlantic Ocean. The exclave province of Cabinda has a border with the Republic of the Congo and the Democratic Republic of the Congo. Angola is divided into eighteen provinces and 163 municipalities. The country's official language is Portuguese and its capital is Luanda.
The Balkans are usually said to comprise Albania, Bosnia and Herzegovina, Bulgaria, Croatia, Kosovo, the Republic of Macedonia, Montenegro, Romania, Serbia and Slovenia, while Greece and Turkey are often excluded. Its total area is usually given as 666,700 square km (257,400 square miles) and the population as 59,297,000 (est. 2002).
Further northwest is Lake Victoria on the Kenya–Uganda–Tanzania border. This is the largest lake in Africa by surface area and is traditionally named as the source of the Nile River. Southwest of this, separating Tanzania from the Democratic Republic of the Congo, is Lake Tanganyika. This lake is estimated to be the second deepest lake in the world after Lake Baikal in Siberia. The western portion of the country between Lakes Victoria, Tanganyika, and Malawi consists of flat land that has been categorised by the World Wildlife Fund as part of the Central Zambezian Miombo woodlands ecoregion. Just upstream from the Kalambo Falls, there is one of the most important archaeological sites in Africa.
West/Central Africa has the highest rate of children under five underweight in the world. Of the countries in this region, the Congo has the lowest rate at 14%, while the nations of Democratic Republic of the Congo, Ghana, Guinea, Mali, Nigeria, Senegal and Togo are improving slowly. In Gambia, rates decreased from 26% to 17% in four years, and their coverage of vitamin A supplementation reaches 91% of vulnerable populations. This region has the next highest proportion of wasted children, with 10% of the population under five not at optimal weight. Little improvement has been made between the years of 1990 and 2004 in reducing the rates of underweight children under five, whose rate stayed approximately the same. Sierra Leone has the highest child under five mortality rate in the world, due predominantly to its extreme infant mortality rate, at 238 deaths per 1000 live births. Other contributing factors include the high rate of low birthweight children (23%) and low levels of exclusive breast feeding (4%). Anemia is prevalent in these nations, with unacceptable rates of iron deficient anemia. The nutritional status of children is further indicated by its high rate of child wasting - 10%. Wasting is a significant problem in Sahelian countries – Burkina Faso, Chad, Mali, Mauritania and Niger – where rates fall between 11% and 19% of under fives, affecting more than 1 million children.
The great Congo River (; ; ), formerly known as the Zaire River under the Mobutu regime, is the second longest river in Africa, shorter only than the Nile, as well as the second largest river in the world by discharge volume, following only the Amazon. It is also the world's deepest recorded river, with measured depths in excess of .
The Congo-Lualaba-Chambeshi River system has an overall length of , which makes it the world's ninth-longest river. The Chambeshi is a tributary of the Lualaba River, and "Lualaba" is the name of the Congo River upstream of Boyoma Falls, extending for .
A male African forest elephant rarely exceeds 2.5 m (8.2 ft) in height, considerably smaller than the bush species which is usually over 3 m (9.8 ft) and sometimes almost 4 m (13.1 ft) tall. "L. cyclotis" reportedly weighs around , with the largest specimens attaining . Pygmy elephants of the Congo Basin, presumed to be a subgroup of "L. cyclotis", have reportedly weighed as little as as adults.
This is a list of the extreme points of Burkina Faso, the points that are farther north, south, east or west than any other location.It is made up of two major types of countryside. The larger part of the country is covered by a peneplain, which forms a gently undulating landscape with, in some areas, a few isolated hills, the last vestiges of a Precambrian massif. The southwest of the country, on the other hand, forms a sandstone massif, where the highest peak, Ténakourou, is found at an elevation of . The massif is bordered by sheer cliffs up to high. The average altitude of Burkina Faso is and the difference between the highest and lowest terrain is no greater than . Burkina Faso is therefore a relatively flat country. Its elevation extremes are a lowest point at the Mouhoun (Black Volta) River (200 m) and highest point at Tena Kourou (749 m).
According to the Ministry of Finance, gold has become the top export commodity. In 2011, it earned Burkina Faso 127 billion CFA (US$247 million). Between 2007 and 2011, it brought in 440 billion CFA, accounting for 64.7 percent of all exports and 8 percent of GDP. Production rose from 23 tonnes in 2010 to 32 tonnes in 2011. Gold mines are spread across the country's northern, western, southwestern and central regions.
Burkina Faso's gold industry employs slave laborers and does not spare children. In 2013, the U.S. Department of Labor reported that gold mining becoming an even more fruitful industry, it has resulted in "an increased number of children working in gold mines and thousands of students leaving school."
A December 2014 report further corroborates the fact that child labor and forced labor are common practices in Burkina Faso's mining industry. The mentioned DOL report contains a "List of Goods Produced by Child Labor or Forced Labor" and Burkina Faso is listed among 74 other countries where such labor conditions have been observed.
Burkina Faso (formerly Upper Volta) is a landlocked Sahel country that shares borders with six nations. It lies between the Sahara desert and the Gulf of Guinea, south of the loop of the Niger River, mostly between latitudes 9° and 15°N (a small area is north of 15°), and longitudes 6°W and 3°E. The land is green in the south, with forests and fruit trees, and desert in the north. Most of central Burkina Faso lies on a savanna plateau, above sea level, with fields, brush, and scattered trees. Burkina Faso's game preserves—the most important of which are Arly, Nazinga, and W National Park—contain lions, elephants, hippopotamus, monkeys, common warthogs, and antelopes. Previously the endangered painted hunting dog, "Lycaon pictus" occurred in Burkina Faso, but, although the last sightings were made in Arli National Park, the species is considered extirpated from Burkina Faso. Tourism is not well developed.
According to the Global Hunger Index, a multidimensional tool used to measure and track a country's hunger levels, Burkina Faso ranked 65 out of 78 countries in 2013. It is estimated that there are currently over 1.5 million children who are at risk of food insecurity in Burkina Faso, with around 350,000 children who are in need of emergency medical assistance. However, only about a third of these children will actually receive adequate medical attention. Only 11.4 percent of children under the age of two receive the daily recommended number of meals. Stunted growth as a result of food insecurity is a severe problem in Burkina Faso, affecting at least a third of the population from 2008 to 2012. Additionally, stunted children, on average, tend to complete less school than children with normal growth development, further contributing to the low levels of education of the Burkina Faso population.