Title: List of cities in Sudan
Content: Abekr ; Abyei ; Al Fashir ; Al Managil ; Al Qadarif ; Atbara ; Babanusa ; Berber ; Buwaidhaa ; Delgo ; Dongola ; Ad-Damazin ; Ed Dueim ; El Ait ; El Gebir ; En Nahud ; El-Obeid ; Er Rahad ; Geneina ; Hala'ib ; `Iyāl Bakhīt ; Kaduqli ; Kassala ; Kauda ; Khartoum - Capital ; Khartoum North or Bahri ; Kusti or Kosti ; Merowe ; Muglad ; Nebelat el Hagana ; New Halfa or Halfa Aljadeda ; Nyala ; Omdurman ; Port Sudan or Bur Sudan ; Rabak ; Ruaba or Umm Rawaba ; Sennar or Sannar ; Shendi or Shandi ; Sindscha ; Singa ; Suakin ; Tabat or Al Shaikh Abdulmahmood ; Taiyara ; Tonj ; Wad Banda ; Wad Madani or Wad Medani ; Wadi Halfa ; Umm Badr ; Umm Bel ; Umm Dam ; Umm Debbi ; Umm Gafala ; Umm Keddada ; Umm Qantur ; Um Rawaba ; Umm Saiyala ; Umm Shanqa   Almazmoum
Title: South Sudan
Content:  The capital of South Sudan is located at Juba, which is also the state capital of Central Equatoria and the county seat of the eponymous Juba County, and is the country's largest city. However, due to Juba's poor infrastructure and massive urban growth, as well as its lack of centrality within South Sudan, the South Sudanese Government adopted a resolution in February 2011 to study the creation of a new planned city to serve as the seat of government. It is planned that the capital city will be changed to the more centrally located Ramciel. This proposal is functionally similar to construction projects in Abuja, Nigeria; Brasília, Brazil; and Canberra, Australia; among other modern-era planned national capitals. It is unclear how the 
Title: Khartoum
Content:  Khartoum or Khartum ( الخرطوم) is the capital of Sudan. With a population of 5,274,321, its metropolitan area is the largest in Sudan. It is located at the confluence of the White Nile, flowing north from Lake Victoria, and the Blue Nile, flowing west from Lake Tana in Ethiopia. The place where the two Niles meet is known as al-Mogran or al-Muqran (المقرن; English: "The Confluence"). From there, the Nile continues north towards Egypt and the Mediterranean Sea. Divided by these two parts of the Nile, Khartoum is a tripartite metropolis with an estimated population of over five million people, consisting of Khartoum proper, and linked by bridges to Khartoum North (الخرطوم بحري al-Kharṭūm Baḥrī) and Omdurman (أم درمان Umm 
Title: Port Sudan
Content:  Port Sudan (بور سودان) is a port city in eastern Sudan, and the capital of the state of Red Sea. , it has 489,725 residents. Port Sudan is located on the Red Sea, and it is recognized as Sudan's main seaport.
Title: Khartoum (state)
Content:  Khartoum State (ولاية الخرطوم) is one of the eighteen states of Sudan. Although it is the smallest state by area (22,142 km2), it is the most populous (5,274,321 in 2008 census). It contains the country's second largest city by population, Omdurman, and the city of Khartoum, which is the capital of the state as well as the national capital of Sudan. The capital city contains offices of the state, governmental and non-governmental organizations, cultural institutions, and the main airport. The city is located in the heart of Sudan at the confluence of the White Nile and the Blue Nile, where the two rivers 
Title: Northern state, Sudan
Content: Dongola (Capital) ; Merowe ; Wadi Halfa ; Al Dabbah ; Delgo ; Al Goled ; Al Burgaig 
Title: Sudan
Content:  Sudan ( or ; السودان), officially the Republic of the Sudan (جمهورية السودان), is a country in Northeast Africa. It borders the countries of Central African Republic, Chad, Egypt, Eritrea, Ethiopia, Libya, South Sudan, and the Red Sea. It has a population of 44.91 million people as of 2021 and occupies 1,886,068 square kilometres (728,215 square miles), making it Africa's third-largest country by area, and the third-largest by area in the Arab League. It was the largest country by area in Africa and the Arab League until the secession of South Sudan in 2011, since which both titles have been held by Algeria. Its capital is 
Title: Outline of South Sudan
Content:   The following outline is provided as an overview of and topical guide to South Sudan: South Sudan is a landlocked country in east-central Africa that is part of the United Nations subregion of Eastern Africa. It was previously known as Southern Sudan. It is located south of Sudan, and includes the vast swamp region of the Sudd, formed by the White Nile and known locally as the Bahr al Jabal. South Sudan became an independent state on 9 July 2011, following a referendum that passed with 98.83% of the vote. It is a United Nations member state, a member state of the African Union, and a member state of the Intergovernmental Authority on Development. In July 2012, South Sudan signed the Geneva Conventions. Its current capital is Juba, which is also its largest city. The capital city is planned to be changed to the more centrally located Ramciel in the future.
Title: List of airports in Sudan
Content:   This is a list of airports in Sudan, sorted by location. Sudan, officially the Republic of the Sudan, sometimes called North Sudan is an Arab state in North Africa. It is bordered by Egypt to the north, the Red Sea to the northeast, Eritrea and Ethiopia to the east, South Sudan to the south, the Central African Republic to the southwest, Chad to the west, and Libya to the northwest. The Nile divides the country into eastern and western halves. The capital city is Khartoum. The country is divided into 18 states.
Title: Juba
Content:   Juba is the capital and largest city of South Sudan. The city is situated on the White Nile and also serves as the capital of the Central Equatoria State. It is the world's newest capital city, and had a population of 525,953 in 2017. It has an area of 52 sqkm, with the metropolitan area covering 336 sqkm. Juba was established in 1920–21 by the Church Missionary Society (CMS) in a small Bari village, also called Juba. The city was made as the capital of Mongalla Province in the late 1920s. The growth of the town accelerated following the signing of the Comprehensive Peace Agreement in 2005, which made Juba the capital of the Autonomous Government of Southern Sudan. Juba became the capital of South Sudan in 2011 after its independence, but influential parties wanted Ramciel to be the capital. The government announced the move of the capital to Ramciel, but is yet to occur.

Question: What is the capital of Sudan?
Answer: Khartoum.