Question: At the start of 1918, what official name was given to the country that the spouse of Kseniya Boguslavskaya came from?

full_context: Document 1: 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 2: Russian Soviet Federative Socialist Republic: On January 25, 1918, at the third meeting of the All-Russian Congress of Soviets, the unrecognized state was renamed the Soviet Russian Republic. On March 3, 1918, the Treaty of Brest-Litovsk was signed, giving away much of the land of the former Russian Empire to Germany, in exchange for peace in World War I. On July 10, 1918, the Russian Constitution of 1918 renamed the country the Russian Socialist Federative Soviet Republic. By 1918, during the Russian Civil War, several states within the former Russian Empire had seceded, reducing the size of the country even more.
Document 3: 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 4: 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 5: 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 6: Treaty of Brest-Litovsk: The Treaty of Brest - Litovsk was a peace treaty signed on 3 March 1918 between the new Bolshevik government of Soviet Russia and the Central Powers (Germany, Austria - Hungary, Bulgaria, and the Ottoman Empire), that ended Russia's participation in World War I. The treaty was signed at Brest - Litovsk (Polish: Brześć Litewski; since 1945 Brest), after two months of negotiations. The treaty was agreed upon by the Bolshevik government to stop further advances by German and Austro - Hungarian forces. According to the treaty, Soviet Russia defaulted on all of Imperial Russia's commitments to the Triple Entente alliance.
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: 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.
Document 9: 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 10: Russian Soviet Federative Socialist Republic: On January 25, 1918 the third meeting of the All-Russian Congress of Soviets renamed the unrecognized state the Soviet Russian Republic. The Treaty of Brest-Litovsk was signed on March 3, 1918, giving away much of the land of the former Russian Empire to Germany in exchange for peace during the rest of World War I. On July 10, 1918, the Russian Constitution of 1918 renamed the country the Russian Socialist Federative Soviet Republic. By 1918, during the Russian Civil War, several states within the former Russian Empire seceded, reducing the size of the country even more.
Document 11: Russian Soviet Federative Socialist Republic: On December 30, 1922, with the creation of the Soviet Union, Russia became one of six republics within the federation of the Union of Soviet Socialist Republics. The final Soviet name for the republic, the Russian Soviet Federative Socialist Republic, was adopted in the Soviet Constitution of 1936. By that time, Soviet Russia had gained roughly the same borders of the old Tsardom of Russia before the Great Northern War of 1700.
Document 12: 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 13: Andrei Ivanovitch: Andrei Ivanovitch (born 1968 in Bucharest, Romania) is an international classical pianist and winner of a number of international competitions.
Document 14: Russian Soviet Federative Socialist Republic: On December 25, 1991, following the collapse of the Soviet Union, the republic was renamed the Russian Federation, which it remains to this day. This name and "Russia" were specified as the official state names in the April 21, 1992 amendment to the existing constitution and were retained as such in the 1993 Constitution of Russia.
Document 15: 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.
ground_truth: the Soviet Russian Republic
sub_queries: Kseniya Boguslavskaya >> spouse Answer: Ivan Puni
What country is Ivan Puni from? Answer: Russia
Which official name was Russia given at the start of 1918? Answer: the Soviet Russian Republic