Question: Who was the oppressive Communist leader who was deposed in 1989, in the country that contains the commune of Ighiu?

full_context: Document 1: Vasile Luca: Vasile Luca (born László Luka; 8 June 1898 – 23 July 1963) was an Austro-Hungarian-born Romanian and Soviet communist politician, a leading member of the Romanian Communist Party (PCR) from 1945 and until his imprisonment in the 1950s. Noted for his activities in the Ukrainian SSR in 1940–1941, he sided with Ana Pauker during World War II, and returned to Romania to serve as the minister of finance and one of the most recognizable leaders of the Communist regime. Luca's downfall, coming at the end of a conflict with Gheorghe Gheorghiu-Dej, signaled that of Pauker.
Document 2: Ungheni, Argeș: Ungheni is a commune in the southwestern part of Argeș County, Romania. It is composed of six villages: Colțu, Găujani, Goia, Humele, Satu Nou and Ungheni.
Document 3: Nicolae Ceaușescu: Nicolae Ceaușescu (Romanian: (nikoˈla. e t͡ʃe̯a. uˈʃesku) (listen); 26 January 1918 -- 25 December 1989) was a Romanian Communist politician. He was general secretary of the Romanian Communist Party from 1965 to 1989, and hence the second and last Communist leader of Romania. He was also the country's head of state from 1967, serving as President of the State Council, from 1974 concurrently as President of the Republic, until his overthrow in the Romanian Revolution in 1989.
Document 4: Nicolae Rădescu: Nicolae Rădescu (; 30 March 1874, Călimănești – 16 May 1953, New York City) was a Romanian army officer and political figure. He was the last pre-communist rule Prime Minister of Romania, serving from 7 December 1944 to 1 March 1945.
Document 5: List of leaders of the Soviet Union: Leonid Brezhnev (1906 -- 1982) 14 October 1964 ↓ 10 November 1982 † 23rd -- 26th Congress Served as First Secretary of the Central Committee of the Communist Party, was later renamed General Secretary, and was co-equal with premier Alexei Kosygin until the 1970s. To consolidate his power he later assumed the title of Chairman of the Presidium.
Document 6: Nikita Khrushchev: Nikita Sergeyevich Khrushchev (15 April (O.S. 3 April) 1894 -- 11 September 1971) was a Soviet politician who led the Soviet Union during part of the Cold War as the First Secretary of the Communist Party of the Soviet Union from 1953 to 1964, and as Chairman of the Council of Ministers, or Premier, from 1958 to 1964. Khrushchev was responsible for the de-Stalinization of the Soviet Union, for backing the progress of the early Soviet space program, and for several relatively liberal reforms in areas of domestic policy. Khrushchev's party colleagues removed him from power in 1964, replacing him with Leonid Brezhnev as First Secretary and Alexei Kosygin as Premier.
Document 7: Constantin Pîrvulescu: Constantin Pîrvulescu (November 10, 1895, Vâlcea County – July 11, 1992, Roman) was a Romanian communist politician, one of the founders of the Romanian Communist Party (PCR), who, as time went on, became an active opponent of s leader Nicolae Ceauşescu. Briefly expelled from the Party in 1960, he was re-admitted and elected to the Party Revision Committee in 1974.
Document 8: Buhoci: Buhoci is a commune in Bacău County, Romania. It is composed of five villages: Bijghir, Buhocel, Buhoci, Coteni and Dospinești. The village of Buhoci is to the east of the city of Bacău.
Document 9: Iosif Dan: Iosif Dan (commonly known as Dan Iosif, 14 October 1950 – 5 December 2007) was a Romanian politician who was a leading figure in the 1989 Romanian revolution, leading protests in Bucharest in the final days of Nicolae Ceauşescu's 25-year rule.
Document 10: Budești Josani church: The church of Saint Nicholas in Budești Josani ("Lower Budești") in the village of Budeşti in the region of Maramureș, Cosău valley in Romania is representative of the characteristic wooden churches of Maramureș with double eaves. It is one of eight wooden churches of Maramureș that UNESCO has listed as a World Heritage Site.
Document 11: Constantin Dăscălescu: Constantin Dăscălescu (; 2 July 1923 – 15 May 2003) was a Romanian communist politician who served as Prime Minister of Romania (21 May 1982 – 22 December 1989) during the communist rule of Nicolae Ceaușescu until the Romanian Revolution.
Document 12: Biertan fortified church: The Biertan fortified church (; ) is a Lutheran fortified church in Biertan ("Birthälm"), Sibiu County, in the Transylvania region of Romania. It was built by the ethnic German Transylvanian Saxon community at a time when the area belonged to the Kingdom of Hungary. Briefly Roman Catholic, it became Lutheran following the Reformation. Together with the surrounding village, the church forms part of the villages with fortified churches in Transylvania UNESCO World Heritage Site.
Document 13: Ighiu: Ighiu (; ) is a commune located in Alba County, Romania. The commune is composed of five villages: Bucerdea Vinoasă ("Borosbocsárd"), Ighiel ("Igenpataka"), Ighiu, Șard ("Sárd") and Țelna ("Celna"). Șard and Ighiu have a fortified church, the latter being used as a guest house, the Reformed Church of Ighiu.
Document 14: Poboru: Poboru is a commune in Olt County, Romania. It is composed of six villages: Albești, Cornățelu, Creți, Poboru, Seaca and Surpeni.
Document 15: Saschiz fortified church: The Saschiz fortified church (; ) is a Lutheran fortified church in Saschiz ("Keisd"), Mureș County, in the Transylvania region of Romania. It was built by the ethnic German Transylvanian Saxon community at a time when the area belonged to the Kingdom of Hungary. Initially Roman Catholic, it became Lutheran following the Reformation. Together with the surrounding village, the church forms part of the villages with fortified churches in Transylvania UNESCO World Heritage Site.
ground_truth: Nicolae Ceaușescu
sub_queries: Ighiu >> country Answer: Romania
oppressive communist leader of Romania who was deposed in 1989 Answer: Nicolae Ceaușescu