Question: Who was in charge of the country where Kseniya Boguslavskaya's spouse is from?

full_context: Document 1: Marius Petipa: Marius Ivanovich Petipa (Russian: Ма́риус Ива́нович Петипа́), born Victor Marius Alphonse Petipa (11 March 1818 -- 14 July (O.S. 1 July) 1910) was a French and Russian ballet dancer, pedagogue and choreographer. Petipa is considered to be the most influential ballet master and choreographer in ballet history.
Document 2: Russian Soviet Federative Socialist Republic: On March 17, 1991, an all-Russian referendum created the post of President of the RSFSR. On June 12, Boris Yeltsin was elected President of Russia by popular vote. During an unsuccessful coup attempt on August 19–21, 1991 in Moscow, the capital of the Soviet Union and Russia, President of Russia Yeltsin strongly supported the President of the Soviet Union, Mikhail Gorbachev.
Document 3: Ivan Koumaev: Koumaev was born in Khabarovsk, Russia and moved to Mill Creek, Washington when he was seven years old. He started dancing at age 11 training under Kimera Lewis, after watching the film "Breakin'".
Document 4: Privatization in Russia: Privatization in Russia describes the series of post-Soviet reforms that resulted in large - scale privatization of Russia's state - owned assets, particularly in the industrial, energy, and financial sectors. Most privatization took place in the early and mid-1990s under Boris Yeltsin, who assumed the presidency following the dissolution of the Soviet Union.
Document 5: Russian Soviet Federative Socialist Republic: On June 12, 1990, the Congress of People's Deputies adopted the Declaration of State Sovereignty. On June 12, 1991, Boris Yeltsin was elected the first President. On December 8, 1991, heads of Russia, Ukraine and Belarus signed the Belavezha Accords. The agreement declared dissolution of the USSR by its founder states (i.e. denunciation of 1922 Treaty on the Creation of the USSR) and established the CIS. On December 12, the agreement was ratified by the Russian Parliament, therefore Russian SFSR denounced the Treaty on the Creation of the USSR and de facto declared Russia's independence from the USSR.
Document 6: History of Russia (1991–present): Prior to the dissolution of the Soviet Union, Boris Yeltsin had been elected President of Russia in June 1991 in the first direct presidential election in Russian history. This ensured that Yeltsin would be the political leader of the Russian successor state following dissolution. This situation resulted in political turmoil as the Soviet and Russian leadership wrestled for control, which culminated in the 1991 August Putsch, where the Soviet military attempted to overthrow Gorbachev. Although the coup was ultimately averted, this situation contributed to rising instability in the Soviet Union. By October 1991, as the USSR was on the verge of collapse, Yeltsin announced that Russia would proceed with radical reforms, including market - oriented reform along the lines of Poland's ``big bang '', also known as`` shock therapy''.
Document 7: Dan Petrașincu: He was born in Odessa from an Italian father and a Romanian mother. In the aftermath of the Russian Revolution, when he was ten years old, the family fled to Romania, where he went to high school in Râmnicu Sărat and Bucharest.
Document 8: Ivan Puni: Ivan Puni was born in Kuokkala (then Grand Duchy of Finland in the Russian Empire, now Repino in Russia) to a family of Italian origins. He is the grandson of an eminent Italian composer of ballet music, Cesare Pugni.
Document 9: Nora Gal: She was born on April 27, 1912 in Odessa. Her father was a medical doctor. As a child, she moved to Moscow with her family. After several unsuccessful attempts she was admitted to the Lenin Pedagogical Institute, from which she graduated. She then completed her post-graduate studies with a thesis on the French poet Arthur Rimbaud and published articles on classical and contemporary foreign literature (Guy de Maupassant, Byron, Alfred de Musset). She married literary critic Boris Kuzmin and later became editor of his selected works.
Document 10: Lev Kublanov: Lev Kublanov was born in Moscow, Russia, and spent his childhood in a historic neighborhood near the Red Square. He graduated from the Moscow Architectural Institute in 1972; he consequently worked for 20 years in various Moscow architectural design firms and became a member of the Architects’ Union of the USSR. He has been a member of the International Union of Architects since 1981. In 1985, tired of designing monotonous mass-apartment buildings and offices, Kublanov left architecture to become a graphic artist. Since then, he has participated in personal and group exhibitions in Russia, Western Europe, and USA. His works can be found in private collections all over the world, including Russia, Austria, Hungary, Germany, USA, Israel, Italy, Poland, France and Japan.
Document 11: Andrei Ivanovitch: Andrei Ivanovitch (born 1968 in Bucharest, Romania) is an international classical pianist and winner of a number of international competitions.
Document 12: Alice Halicka: Alicja Halicka was born in Kraków and studied with Józef Pankiewicz there. She moved to Paris in 1912 where she studied at Académie Ranson under Paul Sérusier and Maurice Denis. There she met and married the Cubist painter Louis Marcoussis in 1913. In 1921 she showed cubist work together with her husband at the Société des Artistes Indépendants. She also exhibited her work at the Galerie Georges Petit, Paris (1930-31), Le Centaure, Brussels, the Leicester Galleries, London (1934), the Marie Harriman Gallery, New York (1936), Julian Levy Gallery, New York (1937). Halicka painted in various styles but also produced work in fabric, including Romances capitonnées, and even made set designs for ballets which were performed at the Metropolitan Opera of New York and Covent Garden, London.
Document 13: Bolesław Leśmian: Bolesław Leśmian was born January 22, 1877 in Warsaw, Congress Poland, Russian Empire to a family of Polonized Jewish intelligentsia. He spent his childhood and youth in Kiev, where he graduated from the law faculty of Saint Vladimir University. In 1901, he returned to Warsaw. From there, he set off on a journey to various European cities, including Munich and Paris, where he married a painter, Zofia Chylińska. Heavily influenced by French modernists, Leśmian returned to Warsaw, where he became one of the founders of an experimental "Artistic Theatre". There he also met one of his closest friends, Zenon Przesmycki, with whom he became involved in the publication of "Chimera", an art newspaper.
Document 14: Russia: In June 1991, Boris Yeltsin became the first directly elected President in Russian history when he was elected President of the Russian Soviet Federative Socialist Republic, which became the independent Russian Federation in December of that year. During and after the disintegration of the Soviet Union, wide-ranging reforms including privatization and market and trade liberalization were undertaken, including radical changes along the lines of "shock therapy" as recommended by the United States and the International Monetary Fund. All this resulted in a major economic crisis, characterized by a 50% decline in both GDP and industrial output between 1990 and 1995.
Document 15: Kseniya Boguslavskaya: Born in St. Petersburg, she studied art in Paris from 1911 to 1913. She returned to St. Petersburg in 1913 and married Ivan Puni. Their apartment in St Petersburg became a meeting place for avant-garde artists and poets. With Puni she published the cubo-futurist booklet "Roaring Parnassus" («Рыкающий Парнас») in 1914.
ground_truth: Boris Yeltsin
sub_queries: Kseniya Boguslavskaya >> spouse Answer: Ivan Puni
What country is Ivan Puni from? Answer: Russia
Who was in charge of Russia ? Answer: Boris Yeltsin