Question: Who was in charge of the country Ribaševina is located in?

full_context: Document 1: Baljev Dol: Baljev Dol is a village in the municipality of Dimitrovgrad, Serbia. According to the 2002 census, the village has a population of 8 people. The village was larger until the unrest in the area following the dissolution of Yugoslavia forced many relations of big-serving tennis ace Ivo Karlović to flee the area.
Document 2: Dame Gruev: In 1904 Dame Gruev chaired the Prilep Congress of the Bitola Revolutionary District of IMRO. In the autumn of that year, Dame was captured by the Serb's leader Micko Krstić, but was set free, with the assistance of Gligor Sokolović, after his negotiations with Pere Toshev. In 1905 Gruev headed the first General Congress of the organization after the uprising, the so-called Rila Congress. Here Dame Gruev was elected as a member of the Central Committee and became in fact its leader, until his death. Indeed, Dame was the only one who appeared to be capable of mastering Yane Sandanski's ambition to leadership. However, the Rila Congress failed to erase the political differences in the organization. There arose a need to conduct a new special congress in Sofia in December 1906, which never took place. At the end of 1906, Gruev moved with his detachment from Ottoman Macedonia to Sofia to attend at the special Congress. On 23 December 1906, Dame Gruev and his detachment were discovered by the Turkish authorities near the village of Rusinovo (Maleševo district). Gruev and his band were confronted by Ottoman forces and in the following battle he was killed.
Document 3: President of South Africa: The President is elected by the National Assembly, the lower house of Parliament, and is usually the leader of the largest party, which has been the African National Congress since the first non-racial elections were held on 27 April 1994. The Constitution limits the president's time in office to two five - year terms. The first president to be elected under the new constitution was Nelson Mandela. The incumbent is Cyril Ramaphosa, who was elected by the National Assembly on 15 February 2018 following the resignation of Jacob Zuma.
Document 4: Ribaševina: Ribaševina (Serbian Cyrillic: Рибашевина) is a village located in the Užice municipality of Serbia. Royal Prime-minister Milan Stojadinovic was kept under house arrest in Ribasevina in 1939, before he was transferred to Mauritius. He was detained in Ribasevina in a villa of a famous Serbian and Yugoslavian painter and sculptor Mihailo Milovanovic.
Document 5: Portugal: The President, who is elected to a five-year term, has an executive role: the current President is Aníbal Cavaco Silva. The Assembly of the Republic is a single chamber parliament composed of 230 deputies elected for a four-year term. The Government is headed by the Prime Minister (currently António Costa) and includes Ministers and Secretaries of State. The Courts are organized into several levels, among the judicial, administrative and fiscal branches. The Supreme Courts are institutions of last resort/appeal. A thirteen-member Constitutional Court oversees the constitutionality of the laws.
Document 6: Mali: The president serves as a chief of state and commander in chief of the armed forces. A prime minister appointed by the president serves as head of government and in turn appoints the Council of Ministers. The unicameral National Assembly is Mali's sole legislative body, consisting of deputies elected to five-year terms. Following the 2007 elections, the Alliance for Democracy and Progress held 113 of 160 seats in the assembly. The assembly holds two regular sessions each year, during which it debates and votes on legislation that has been submitted by a member or by the government.
Document 7: Genocide: Slobodan Milošević, as the former President of Serbia and of Yugoslavia, was the most senior political figure to stand trial at the ICTY. He died on 11 March 2006 during his trial where he was accused of genocide or complicity in genocide in territories within Bosnia and Herzegovina, so no verdict was returned. In 1995, the ICTY issued a warrant for the arrest of Bosnian Serbs Radovan Karadžić and Ratko Mladić on several charges including genocide. On 21 July 2008, Karadžić was arrested in Belgrade, and he is currently in The Hague on trial accused of genocide among other crimes. Ratko Mladić was arrested on 26 May 2011 by Serbian special police in Lazarevo, Serbia. Karadzic was convicted of ten of the eleven charges laid against him and sentenced to 40 years in prison on March 24 2016.
Document 8: President of Russia: The president is elected directly through a popular vote to a six - year term. The law prohibits anyone from ever being elected to the presidency for a third consecutive term. In all, three individuals have served four presidencies spanning six full terms. On 7 May 2012, Vladimir Putin became the fourth and current president.
Document 9: Serbia: The President of the Republic ("Predsednik Republike") is the head of state, is elected by popular vote to a five-year term and is limited by the Constitution to a maximum of two terms. In addition to being the commander in chief of the armed forces, the president has the procedural duty of appointing the prime minister with the consent of the parliament, and has some influence on foreign policy. Aleksandar Vučić of the Serbian Progressive Party is the current president following the 2017 presidential election. Seat of the presidency is Novi Dvor.
Document 10: Marko Milošević: Marko Milošević (; born 3 July 1974) is the son of former Serbian President Slobodan Milošević. He was allegedly involved in organized crime in Serbia during the Yugoslav Wars until he fled the country following his father's removal from power on 5 October 2000. Milošević was later granted refugee status by Russia, and is likely living in Moscow with his wife Milica Gajić and son Marko.
Document 11: Portugal: The Head of State of Portugal is the President of the Republic, elected to a five-year term by direct, universal suffrage. He or she has also supervision and reserve powers. These powers are often compared[by whom?] with the "moderator power" that was held by the King in the Portuguese Constitutional Monarchy.[citation needed] Presidential powers include the appointment of the Prime Minister and the other members of the Government (where the President takes into account the results of legislative elections); dismissing the Prime Minister; dissolving the Assembly of the Republic (to call early elections); vetoing legislation (which may be overridden by the Assembly with a supermajority); and declaring a state of war or siege. The President is also the ex officio Commander-in-Chief of the Armed Forces.
Document 12: Mala Braina: Mala Braina is a village in the municipality of Medveđa, Serbia. According to the 2002 census, the village has a population of 13 people. The author Rizah Sheqiri was born there.
Document 13: Tomislav Nikolić: Tomislav Nikolić (, ; born 15 February 1952) is a Serbian politician who served as the President of Serbia from 2012 to 2017. He is also the founder of the Serbian Progressive Party, and he led the party until his election as President. In the 2012 presidential election, he was elected to a five-year term as President in a second round of voting.
Document 14: Josip Broz Tito: Yugoslavia organized the Yugoslav People's Army (Jugoslavenska narodna armija, or JNA) from the Partisan movement and became the fourth strongest army in Europe at the time. The State Security Administration (Uprava državne bezbednosti/sigurnosti/varnosti, UDBA) was also formed as the new secret police, along with a security agency, the Department of People's Security (Organ Zaštite Naroda (Armije), OZNA). Yugoslav intelligence was charged with imprisoning and bringing to trial large numbers of Nazi collaborators; controversially, this included Catholic clergymen due to the widespread involvement of Croatian Catholic clergy with the Ustaša regime. Draža Mihailović was found guilty of collaboration, high treason and war crimes and was subsequently executed by firing squad in July 1946.
Document 15: Mrveš: Mrves (Mrvesh) is a little village in southern Serbia (Serbia and Montenegro), with about 200 inhabitants (all Serbians). The nearest big town is Leskovac. As many other villages in Serbia, Mrves has a problem with the constant migration of its inhabitants to larger cities and to foreign countries. People in Mrveš use a modified version of Serbian language.
ground_truth: Aleksandar Vučić
sub_queries: Ribaševina >> country Answer: Serbia
Who was in charge of Serbia ? Answer: Aleksandar Vučić