Question: Which rapper forms lyrics in the Swahili language, which is primarily spoken in the African Great Lakes Region?
Context: Issah Mmari Wangui (May 20, 1981 – March 16, 2003), better known by his stage name E-Sir, was a Kenyan hip hop artist.  He was the elder brother to fellow Kenyan rapper Habib.  He was famous for his deft lyrical ability and command of the Swahili language.  The phenomenal popularity of his music disproved the myth that Kenyan music could never compete with imported pop.  Even long after his death, he is still widely regarded as one of the best rappers to emerge on the Kenyan hip hop scene. Swahili, also known as Kiswahili (translation: coast language), is a Bantu language and the first language of the Swahili people.  It is a lingua franca of the African Great Lakes region and other parts of eastern and south-eastern Africa, including Tanzania, Kenya, Uganda, Rwanda, Burundi, Mozambique, and the Democratic Republic of the Congo (DRC).  Comorian, spoken in the Comoros Islands is sometimes considered to be a dialect of Swahili, though other authorities consider it a distinct language. A sufuria (Swahili "sufuria"; English plural "sufurias") is a Swahili language word, adopted in the local African Great Lakes regional variety of English, for a flat based, deep sided, lipped and handleless cooking pot or container.  It is ubiquitous in Kenya, Tanzania and other Great Lakes nations.  A replacement for more traditional crockery containers ("ek fara"), it used in many Kenyan households for cooking, serving and storing food.  Most sufuria are today made of aluminum, and produced and purchased locally in the informal sector.  Sufuria were traditionally used to cook over open fire, charcoal brazier (a "jiko"), or coals, and are purchased in a variety of sizes, with and without lids. The African Great Lakes kingdoms refers to the numerous historic kingdoms in the African Great Lakes region.  These polities existed in the eighteenth and nineteenth centuries, and had similar and yet sometimes distinct cultures, values and traditions.  The Great Lakes kingdoms were found in Southeast Africa and some parts of Central Africa, in what is present-day northwest Tanzania, south Uganda, some parts of Rwanda, and Eastern Congo. People have lived in Zanzibar for 20,000 years.  History proper starts when the islands became a base for traders voyaging between the African Great Lakes, the Arabian peninsula, and the Indian subcontinent.  Unguja offered a protected and defensible harbor, so although the archipelago had few products of value, Omanis and Yemenis settled in what became Zanzibar City (Stone Town) as a convenient point from which to trade with towns on the Swahili Coast.  They established garrisons on the islands and built the first mosques in the African Great Lakes. United Nations Security Council Resolution 1653, adopted unanimously on January 27, 2006, after recalling previous resolutions concerning the situations in the African Great Lakes region, Democratic Republic of the Congo and Burundi, particularly resolutions 1625 (2005), 1631 (2005), 1649 (2005) and 1650 (2005), the Council addressed the stability of the Great Lakes region in Africa. Mandazi, also known as the Swahili Bun or Swahili Coconut Doughnut (Swahili: "Mandazi, Maandazi" ), is a form of fried bread that originated on the Swahili Coast.  It is one of the principal dishes in the cuisine of the Swahili people who inhabit the African Great Lakes.  The dish is popular in the region, as it is convenient to make, can be eaten with almost any food or dips or just as a snack by itself, and can be saved and reheated for later consumption. Swahili literature is, generally speaking, literature written in the Swahili language, particularly by Swahili people of the East African coast and the neighboring islands.  It may also refer to literature written by people who write in the Swahili language.  It is an offshoot of the Bantu culture. Rangi or Langi (there is no distinction between /r/ and /l/ ; also known as "Irangi, Kilaangi," etc.) is a Bantu language of spoken by the Rangi people of Kondoa District in the Dodoma Region of Central Tanzania.  Whilst the language is known as Rangi in English and Kirangi in the dominant Swahili spoken throughout the African Great Lakes, the self-referent term is Kilaangi. Mzungu (] ) is a Bantu language term used in the African Great Lakes region to refer to people of European descent.  It is a commonly used expression among Bantu peoples in Kenya, Tanzania, Malawi, Rwanda, Burundi, Uganda, Democratic Republic of Congo, Comoros, Mayotte and Zambia, dating back to the 18th century.  Literally translated it meant "someone who roams around" or "wanderer."  The term was first used in the African Great Lakes region to describe European explorers in the 18th century, apparently as a result of their extensive travelling all over the world.  The word Mzungu comes from Kiswahili, where "zungu" or "zunguka" is the word for spinning around on the same spot.  "Kizunguzungu" is Kiswahili for a dizziness.  The term is now used to refer to "someone with white skin" or "white skin".  The word Mzungu in Swahili can also mean someone who speaks English.  A person in Swahili is "Mtu" and "English" in Swahili is "Kizungu" hence the combination of the two words to make up a word "Mzungu."
Answer: E-Sir