Question: Who performs a song named for the continent on which you can find the river serving as drainage for the southwest plain of the Congo?

full_context: Document 1: Republic of the Congo: The Republic of the Congo (French: République du Congo), also known as Congo, Congo Republic, West Congo[citation needed], or Congo-Brazzaville, is a country located in Central Africa. It is bordered by five countries: Gabon 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.
Document 2: Africa (Rose Laurens song): "Africa", also titled "Africa (Voodoo Master)", is a 1982 song recorded by French singer Rose Laurens. It was one of the singles from her first album "Déraisonnable" and was released in 1982 in France, and in March 1983 elsewhere. The version available on the 7" is shorter than on the album, as the musical bridge is shortened and there are fewer refrains. It immediately became a smash hit in many countries, reaching the top of the charts. In 1994, a CD maxi of remixes was released, but failed to chart.
Document 3: Africa Unite: The Singles Collection: Africa Unite: The Singles Collection is a compilation album written and performed by the band Bob Marley and the Wailers. The album contains singles from 1970–1984 and includes three remix track with special guests will.i.am, Eric Clapton and Ashley Beedle.
Document 4: Republic of the Congo: The Republic of the Congo's sparse population is concentrated in the southwestern portion of the country, leaving the vast areas of tropical jungle in the north virtually uninhabited. Thus, Congo is one of the most urbanized countries in Africa, with 70% of its total population living in a few urban areas, namely in Brazzaville, Pointe-Noire or one of the small cities or villages lining the 534-kilometre (332 mi) railway which connects the two cities. In rural areas, industrial and commercial activity has declined rapidly in recent years, leaving rural economies dependent on the government for support and subsistence.
Document 5: The Axis of Awesome: After the Edinburgh festival, the Axis of Awesome's song ``4 Chords '', a medley of 36 pop songs that all contain the same basic chord structure, received airplay on BBC Radio 1. This airplay drove listeners to the internet and`` 4 Chords'' went viral, receiving millions of hits on YouTube. The success on YouTube prompted increased interest, both home and abroad, and the Axis performed the song on many radio and television programs, including Nova 96.9, Triple M, The Footy Show, Good News Week and 9am with David & Kim.
Document 6: Geography of Angola: Angola is located on the western Atlantic Coast of Central Africa between Namibia and the Republic of the Congo. It also is bordered by the Democratic Republic of the Congo and Zambia to the east. The country consists of a sparsely watered and somewhat sterile coastal plain extending inland for a distance varying from . Slightly inland and parallel to the coast is a belt of hills and mountains and behind those a large plateau. The total land size is . It has an Exclusive Economic Zone of .
Document 7: Freshlyground: Freshlyground is a South African Afro-fusion band that formed in Cape Town in 2002. The band members have different backgrounds, including South Africa, Mozambique, and Zimbabwe. Freshlyground's musical style blends elements of traditional South African music (such as kwela and African folk music), blues, jazz, and features of indie rock. They are best known for their performance "Waka Waka (This Time for Africa)" with Colombian singer Shakira, which received worldwide recognition. The music video - featuring the group - also received over 1.70 billion views on YouTube.
Document 8: Mitumba Mountains: The Mitumba Mountain range stretches along the Western Rift Valley in Eastern Congo (DRC), west of lake Tanganyika. The two main peaks, Mount Kahuzi (3,308 m) and Mount Biéga (2,790 m) are extinct volcanoes.
Document 9: Republic of the Congo: Congo is located in the central-western part of sub-Saharan Africa, along the Equator, lying between latitudes 4°N and 5°S, and longitudes 11° and 19°E. To the south and east of it is the Democratic Republic of Congo. It is also bounded by Gabon to the west, Cameroon and the Central African Republic to the north, and Cabinda (Angola) to the southwest. It has a short coast on the Atlantic Ocean.
Document 10: Africa (Perpetuum Jazzile album): Africa is 2009 Perpetuum Jazzile album. By large most successful song from the album is "a capella" version of Toto's ""Africa"", the performance video of which has received more than 15 million YouTube views since its publishing in May 2009 until September 2013.
Document 11: Geography of Cambodia: Cambodia's low mountain ranges - representing the walls of the bowl - remain as the result of only rather recent substantial infrastructural development and economic exploitation - in particular in remote areas - formidably forested. The country is fringed to the north by the Dangrek Mountains plateau, bordering Thailand and Laos, to the north - east by the Annamite Range, in the south - west by the Cardamom Mountains and in the South by the Elephant Mountains. Highlands to the north - east and to the east merge into the Central Highlands and the Mekong Delta lowlands of Vietnam.
Document 12: Mayombe: Mayombe (or Mayumbe) is a geographic area on the western coast of Africa occupied by low mountains extending from the mouth of the Congo River in the south to the Kouilou-Niari River to the north. The area includes parts of the Democratic Republic of the Congo, Angola (Cabinda Province), the Republic of the Congo and Gabon.
Document 13: Yumbi: Yumbi is a town and territory in Plateaux District of Bandundu Province in the Democratic Republic of the Congo. It lies on the eastern bank of the Congo River between Bolobo and Lukolela.
Document 14: Congo River: Railways now bypass the three major falls, and much of the trade of Central Africa passes along the river, including copper, palm oil (as kernels), sugar, coffee, and cotton. The river is also potentially valuable for hydroelectric power, and the Inga Dams below Pool Malebo are first to exploit the Congo river.
Document 15: Republic of the Congo: The southwest of the country is a coastal plain for which the primary drainage is the Kouilou-Niari River; the interior of the country consists of a central plateau between two basins to the south and north. Forests are under increasing exploitation pressure.
ground_truth: Perpetuum Jazzile
sub_queries: Which river serves as drainage for the southwest plain of the Congo? Answer: Kouilou-Niari River
Kouilou-Niari River >> continent Answer: Africa
Africa >> performer Answer: Perpetuum Jazzile