Question: Who was the first leader of the country where Gangala-na-Bodio is located?

full_context: Document 1: N'dangi: N'dangi is a village in the Democratic Republic of the Congo. The village is located 12 km north of the city of Gbadolite at the Ubangi River at the border to the Central African Republic. N'dangi is known for the former military harbor, the only military harbor between Kinshasa and Kisangani. The harbor was built in the late 1970s and was connected by a secret tunnel to a nuclear bunker under the palace of the Mobutu. In the mid 1990s, with the downfall of Mobutu the harbor was destroyed and only a few ruins remain.
Document 2: Central African Republic: In the southwest, the Dzanga-Sangha National Park is located in a rain forest area. The country is noted for its population of forest elephants and western lowland gorillas. In the north, the Manovo-Gounda St Floris National Park is well-populated with wildlife, including leopards, lions, cheetahs and rhinos, and the Bamingui-Bangoran National Park is located in the northeast of CAR. The parks have been seriously affected by the activities of poachers, particularly those from Sudan, over the past two decades.[citation needed]
Document 3: Gangala-na-Bodio: Gangala-na-bodio is a town in northeastern DR Congo. It was the site of the Gangala-na-Bodio Elephant Domestication Center during the colonial period.
Document 4: Nyangwe: Nyangwe is a town in Maniema, on the right bank of the Lualaba in the Democratic Republic of Congo (territory of Kasongo). It was an important hub for the Arabs for trade goods like ivory and also one of the main slave trading states in the region at the end of the 19th century.
Document 5: Republic of the Congo: Many Pygmies belong from birth to Bantus in a relationship many refer to as slavery. The Congolese Human Rights Observatory says that the Pygmies are treated as property the same way "pets" are. On December 30, 2010, the Congolese parliament adopted a law for the promotion and protection of the rights of indigenous peoples. This law is the first of its kind in Africa, and its adoption is a historic development for indigenous peoples on the continent.
Document 6: Republic of the Congo: The region was dominated by Bantu-speaking tribes, who built trade links leading into the Congo River basin. Congo-Brazzaville was formerly part of the French colony of Equatorial Africa. Upon independence in 1960, the former colony of French Congo became the Republic of the Congo. The People's Republic of the Congo was a Marxist–Leninist one-party state from 1970 to 1991. Multi-party elections have been held since 1992, although a democratically elected government was ousted in the 1997 Republic of the Congo Civil War and President Denis Sassou Nguesso has ruled for 26 of the past 36 years.
Document 7: Republic of the Congo: The Republic of the Congo received full independence from France on August 15, 1960. Fulbert Youlou ruled as the country's first president until labour elements and rival political parties instigated a three-day uprising that ousted him. The Congolese military took charge of the country briefly and installed a civilian provisional government headed by Alphonse Massamba-Débat.
Document 8: Lola ya Bonobo: Lola ya Bonobo means 'paradise for bonobos' in Lingala, the main language of Kinshasa. Lola ya Bonobo is home to about 60 bonobos who live in 30 hectares of primary forest.
Document 9: Republic of the Congo: The region was dominated by Bantu-speaking tribes at least 3,000 years ago, who built trade links leading into the Congo River basin. Congo was formerly part of the French colony of Equatorial Africa. The Republic of the Congo was established on the 28th of November 1958 but gained independence from France in 1960. The sovereign state has had multi-party elections since 1992, although a democratically elected government was ousted in the 1997 Republic of the Congo Civil War, and President Denis Sassou Nguesso, who first came to power in 1979, has ruled for 35 of the past 40 years.
Document 10: Republic of the Congo: Under the 1963 constitution, Massamba-Débat was elected President for a five-year term. During Massamba-Débat's term in office the regime adopted "scientific socialism" as the country's constitutional ideology. In 1965, Congo established relations with the Soviet Union, the People's Republic of China, North Korea and North Vietnam. Massamba-Débat's regime also invited several hundred Cuban army troops into the country to train his party's militia units and these troops helped his government survive a coup in 1966 led by paratroopers loyal to future President Marien Ngouabi. Nevertheless, Massamba-Débat was unable to reconcile various institutional, tribal and ideological factions within the country and his regime ended abruptly with a bloodless coup d'état in September 1968.
Document 11: North Kivu: The province consists of three cities—Goma, Butembo and Beni—and six territories—Beni, Lubero, Masisi, Rutshuru, Nyiragongo and Walikale. The province is home to the Virunga National Park, a World Heritage Site containing the endangered mountain gorillas.
Document 12: Galgala: Galgala is a town in Bari region of Somalia. The town has ancient markings of religious symbols and crosses and ancient remains of a cairns which commonly found in Sanaag and Bari, Somalia regions. The town has a population nearing 20,000.
Document 13: Republic of the Congo: Following the revision of the French constitution that established the Fifth Republic in 1958, the AEF dissolved into its constituent parts, each of which became an autonomous colony within the French Community. During these reforms, Middle Congo became known as the Republic of the Congo in 1958 and published its first constitution in 1959. Antagonism between the pro-Opangault Mbochis and the pro-Youlou Balalis resulted in a series of riots in Brazzaville in February 1959, which the French Army subdued.
Document 14: Republic of the Congo: Pascal Lissouba, who became Congo's first elected president (1992–1997) during the period of multi-party democracy, attempted to implement economic reforms with IMF backing to liberalise the economy. In June 1996 the IMF approved a three-year SDR69.5m (US$100m) enhanced structural adjustment facility (ESAF) and was on the verge of announcing a renewed annual agreement when civil war broke out in Congo in mid-1997.
Document 15: History of the Democratic Republic of the Congo: After an uprising by the Congolese people, Belgium surrendered to the independence of the Congo in 1960. However, the Congo remained unstable because tribal leaders had more power than the central government. Prime Minister Patrice Lumumba tried to restore order with the aid of the Soviet Union as part of the Cold War, causing the United States to support a coup led by Colonel Joseph Mobutu in 1965. Mobutu quickly seized complete power of the Congo and renamed the country Zaire. He sought to Africanize the country, changing his own name to Mobutu Sese Seko, and demanded that African citizens change their Western names to traditional African names. Mobutu sought to repress any opposition to his rule, in which he successfully did throughout the 1980s. However, with his regime weakened in the 1990s, Mobutu was forced to agree to a power - sharing government with the opposition party. Mobutu remained the head of state and promised elections within the next two years that never took place.
ground_truth: Fulbert Youlou
sub_queries: Gangala-na-Bodio >> country Answer: Congo
Who was the first leader of the independent Congo ? Answer: Fulbert Youlou