Question: What is the population of the sovereign state that Souleymane Dela Sacko plays in?

full_context: Document 1: Ghana: Ghana ( ), officially the Republic of Ghana, is a unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic Ocean, in the subregion of West Africa. Spanning a land mass of 238,535 km², Ghana is bordered by the Ivory Coast in the west, Burkina Faso in the north, Togo in the east and the Gulf of Guinea and Atlantic Ocean in the south. "Ghana" means "Warrior King" in the Soninke language.
Document 2: Equatorial Guinea: Equatorial Guinea (Spanish: "Guinea Ecuatorial" , French: "Guinée équatoriale" , Portuguese: "Guiné Equatorial" ), officially the Republic of Equatorial Guinea (Spanish: "República de Guinea Ecuatorial" , French: "République de Guinée équatoriale" , Portuguese: "República da Guiné Equatorial" ), is a country located in Central Africa, with an area of 28000 km2 . 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. s of 2015 , the country had an estimated population of 1,222,245.
Document 3: Nigel de Jong: Nigel de Jong (] ; born 30 November 1984) is a Dutch professional footballer who plays as a defensive midfielder for Turkish club Galatasaray and the Netherlands national team. He joined the Ajax youth academy as a youngster and worked his way through the ranks to make the first team at age 17. Two years later, in 2004, he made his international debut. Additionally, in 2010 he won a World Cup runners-up medal.
Document 4: Ivory Coast: Ivory Coast ( ) or Côte d'Ivoire ( ; ] ), officially the Republic of Côte d'Ivoire (French: "République de Côte d'Ivoire" ), is a country located in West Africa. Ivory Coast's political capital is Yamoussoukro, and its economic capital and largest city is the port city of Abidjan. Its bordering countries are Guinea and Liberia in the west, Burkina Faso and Mali in the north, and Ghana in the east. The Gulf of Guinea (Atlantic Ocean) is located south of Ivory Coast.
Document 5: Togo: Togo ( ), officially the Togolese Republic (French: "République togolaise" ), is a country in West Africa bordered by Ghana to the west, Benin to the east and Burkina Faso to the north. It extends south to the Gulf of Guinea, where its capital Lomé is located. Togo covers 57,000 km2 , making it one of the smallest countries in Africa, with a population of approximately /1e6 round 1 million.
Document 6: Mamadou Sakho: Mamadou Sakho (born 13 February 1990) is a French professional footballer who plays as a centre-back for Premier League club Crystal Palace and the France national team. He is known for his tackling ability and his passing accuracy.
Document 7: Niger women's national football team: The Niger women's national football team is a FIFA-recognised team representing Niger in international association football matches. The team has played in two FIFA recognised matches, both of which were losses to Burkina Faso women's national football team in 2007. There is an under-20 women's national team who were supposed to participate in the 2002 African Women U-19 Championship but withdrew before playing a game. There are problems that impact the development of the women's game in Africa that effect Niger.
Document 8: Gabon: Gabon ( ; ] ), officially the Gabonese Republic (French: "République gabonaise" ), 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 270000 sqkm and its population is estimated at 1.5 million people. Its capital and largest city is Libreville.
Document 9: Mangué Cissé: Mangué Cissé Djibrila (17 November 1945 – 30 September 2009) was an Ivorian footballer who played as a defender. In 1970 he reached to semi-final of the Africa Cup of Nations. He died on 30 September 2009 after long-term disease. He had seven children, the youngest of which is French international, Djibril Cissé.
Document 10: Angola: Angola , officially the Republic of Angola (Portuguese: "República de Angola" ] ; Kikongo, Kimbundu and Umbundu: "Repubilika ya Ngola"), is a country in Southern Africa. It is the seventh-largest country in Africa and is bordered by Namibia to the south, the Democratic Republic of the Congo to the north, Zambia to the east, and the Atlantic Ocean to west. The exclave province of Cabinda has borders with the Republic of the Congo and the Democratic Republic of the Congo. The capital and largest city of Angola is Luanda.
Document 11: Senegal national football team: The Senegal national football team, nicknamed the "Lions of Teranga", is the national team of Senegal and is controlled by the Fédération Sénégalaise de Football. It made its first, and thus far only, FIFA World Cup appearance in 2002 and caused a huge upset by defeating world and European champions France 1–0 in the tournament's opening game.
Document 12: Chad: Chad ( ; Arabic: تشاد‎ ‎ "Tshād "; French: "Tchad" ] ), officially the Republic of Chad (Arabic: جمهورية تشاد‎ ‎ "Jumhūrīyat Tshād "; French: "République du Tchad" "Republic of the Chad"), is a landlocked country in Central Africa. It is bordered by Libya to the north, Sudan to the east, the Central African Republic to the south, Cameroon and Nigeria to the southwest and Niger to the west. It is the fifth largest country in Africa in terms of area.
Document 13: Chérif Souleymane: Chérif Soulegmane, also known as Chérif Souleymane, (born 20 October 1944 in Kindia) is a former Guinean footballer. He is considered among the finest footballers Guinea has ever produced. He was named the France Football African Footballer of the Year and the African Footballer of the Year (the only Guinean to receive that honour) in 1972 while playing with Hafia FC in Conakry.
Document 14: Sol Bamba: Souleymane "Sol" Bamba (born 13 January 1985) is a professional footballer who plays for Championship side Cardiff City and the Ivory Coast national team as a centre-back.
Document 15: Souleymane Dela Sacko: Souleymane Dela Sacko (born August 1, 1977 in Niger) is a Nigerien football midfielder who plays for AS Mangasport in Gabon. He plays for Niger national football team. He was part of the team in World Cup qualifiers.
ground_truth: 1.5 million people