Title: Lyuben Berov
Content:  Lyuben Berov (Любен Беров ) (6 October 1925 in Sofia – 7 December 2006) was a Bulgarian economist. He served as Prime Minister of Bulgaria in the 83th Government of Bulgaria from 30 December 1992 to 17 October 1994.
Title: 2006 in Bulgaria
Content: December 7 - Lyuben Berov, prime minister (1992-1994) 
Title: Oleg Lobov
Content:  From 1960 to 197, he was employed in chemistry and construction industries in Sverdlovsk. He occupied various posts in the Sverdlovsk Communist Party of the Soviet Union), where Boris Yeltsin made a party career, rising up to the regional party head. Then worked in construction and returned to party work in 1982. From 19 April 19 to 15 November 1991 Lobov was First Deputy Chairman of the Council of Ministers of the RSFSR in the first and second cabinets of Ivan Silayev. With Silayev's resignation on 26 September 1991 Lobov became de facto acting prime minister of Russia. He kept the position until the formation of the reformist cabinet on 6 November and final resignation of Silayev's second cabinet on 15 November.
Title: Oleg Lobov
Content:  Oleg Ivanovich Lobov (Олег Иванович Лобов; 7 September 1937 – 6 September 2018) was a Russian politician who served as acting First Deputy Chairman of the Council of Ministers of the Russian Soviet Federated Socialist Republic from 19 April 1991 to 15 November 1991 and also was acting Chairman of the Council of Ministers of the Russian SFSR from 26 September 1991 to 15 November 1991, shortly before the dissolution of the Soviet Union. Until 17 March 1997, Lobov served in various capacities in Russian state and government bodies. His last position was Deputy Head of the Government of the Russian Federation. As of October 2010, Lobov is the chairman of the non-governmental Association for International Cooperation and participates in various construction-related associations and unions.
Title: Andrei Kobyakov
Content:  Andrei Vladimirovich Kobyakov (Андрэй Уладзіміравіч Кабякоў, Andrei Uladzimiravich Kabyakow; Андрей Владимирович Кобяков; born 21 November 1960) is a Belarusian politician. He served as the Prime Minister of Belarus between 2014 and 2018, appointed by president Alexander Lukashenko on 27 December 2014. Before this appointment, Kobyakov served as Lukashenko's Chief of Staff from 2012 to 2014. He was a Deputy Prime Minister from December 2003 to 28 December 2010.
Title: Viktor Berestovoy
Content:  Viktor Ivanovich Berestovoy (Russian: Виктор Иванович Берестовой; born on 9 May 1948), is a Russian politician and statesman who was the first Governor (Head) of Belgorod Oblast from 1991 to 1993. Berestovoy was a member of parliament of the State Duma from 1993 to 1996. He was also a Deputy Chairman of the Central Bank of Russia from May 2003 to June 2018.
Title: Vladimir Brovikov
Content:  Vladimir Ignatevich Brovikov (Belarusian: Уладзімір Ігнатавіч Бровікаў) (12 May 1931 – 10 February 1992) was the Chairman of the Council of Ministers of Byelorussian Soviet Socialist Republic from 8 July 1983 to 10 January 1986. He was preceded by Aleksandr Aksyonov and succeeded by Mikhail Kovalyov.
Title: Viktor Zubkov
Content:  Viktor Alekseyevich Zubkov (born 15 September 1941) is a Russian civil servant, politician and businessman who served as the 36th Prime Minister of Russia from September 2007 to May 2008. He was Vladimir Putin's First Deputy Prime Minister during the presidency of Dmitry Medvedev. A civil servant who held various positions in the Leningrad Oblast under the Soviet regime, he later served as advisor to Cabinet Ministers. Zubkov was a financial crime investigator until he was nominated on 12 September 2007 by President Vladimir Putin to replace Prime Minister Mikhail Fradkov, who had resigned earlier that day. The nomination was approved in the Duma on 14 September 2007. On 7 May 2008 Zubkov's cabinet was automatically dismissed. This procedure, following an inauguration of the President of Russia is required by the Russian Constitution. After Putin became Prime Minister, Zubkov was appointed First Deputy Prime Minister of Russia. Zubkov is also the current chairman of the board of directors of Gazprom, Russia's largest corporation and one of the largest oil and natural gas companies in the world.
Title: Georgy Lvov
Content:  Prince Georgy Yevgenyevich Lvov (2 November 1861 – 7/8 March 1925) was a Russian aristocrat and statesman who served as the first prime minister of democratic Russia from 15 March to 20 July 1917. He was the last Muscovite and the last Rurikid head of the Russian state. During the Russo-Japanese War Lvov gained national fame for organising relief work in the Russian Far East, and in 1905 joined the liberal Constitutional Democratic Party.
Title: Alexander Semyonovich Belyakov
Content:  Alexander Belyakov was born in Sortavala, Karelo-Finnish SSR in 1945. He was elected governor of Leningrad Oblast in 1991 and joined the pro-Boris Yeltsin Our Home is Russia political party in 1995. He was defeated by an independent, Communist Party of the Russian Federation-backed candidate, Vadim Gustov in the election in 1996. Belyakov served as president of the SBS Agro Bank in 1997–1998 before being elected to the State Duma of the Russian Federation in 1999 and serving as chairman of its national resources committee. He was re-elected as a United Russia candidate in 2003. Belyakov is currently president of the Russian Association of Paper & Pulp Organizations and Enterprises (RAO BUMPROM).

Question: Verify the following claims with "True" or "False": When was Lyuben Berov prime minister?
Answer: True