Question: When did the country that the director for Aybolit-66 held a citizenship break up?

full_context: Document 1: 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 2: Russian Soviet Federative Socialist Republic: On December 24, Yeltsin informed the Secretary-General of the United Nations that by agreement of the member states of the CIS Russian Federation would assume the membership of the Soviet Union in all UN organs (including permanent membership in the UN Security Council). Thus, Russia is considered to be an original member of the UN (since October 24, 1945) along with Ukraine (Ukrainian SSR) and Belarus (Byelorussian SSR). On December 25—just hours after Gorbachev resigned as president of the Soviet Union—the Russian SFSR was renamed the Russian Federation (Russia), reflecting that it was now a sovereign state with Yeltsin assuming the Presidency. The change was originally published on January 6, 1992 (Rossiyskaya Gazeta). According to law, during 1992, it was allowed to use the old name of the RSFSR for official business (forms, seals and stamps). The Russian Federation's Constitution (Fundamental Law) of 1978, though with the 1991–1992 Amendements, remained in effect until the 1993 Russian constitutional crisis.
Document 3: Obaltan: The government banned "Obaltan" because of its unremittingly downbeat depiction of life in post-armistice South Korea. An American consultant to the Korean National Film Production Center saw the film and persuaded the government to release it in Seoul so that it might qualify for entry in the San Francisco International Film Festival. Director Yu Hyun-mok attended the film's premier in San Francisco in November 1963. "Variety" called "Obaltan" a "remarkable film", and noted that its "⁠[b]rilliantly detailed camera work is matched by probing sympathy and rich characterizations."
Document 4: Jolly Fellows: The script was written by Aleksandrov, Vladimir Mass, and Nikolai Erdman (whose father briefly appears on screen as a German music teacher). It features several songs which instantly became classics across the Soviet Union. The most famous song — "Kak mnogo devushek khoroshikh" ("Such a lot of nice girls") — enjoyed international fame, covered as "Serdtse" ("Heart") by Pyotr Leshchenko. Music was by Isaak Dunayevsky, the lyrics were written by the Soviet poet Vasily Lebedev-Kumach.
Document 5: 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 6: Aybolit-66: Aybolit-66 () is a 1966 Soviet comedy film for children directed by Rolan Bykov. It is based on a story by Kornei Chukovsky. The film features Oleg Yefremov as the good "Aibolit" and Rolan Bykov as the evil "Barmalei".
Document 7: Ossessione: Visconti adapted the script with a group of men he selected from the Milanese magazine "Cinema". The members of this group were talented filmmakers and writers and played a large role in the emerging neorealist movement: Mario Alicata, Gianni Puccini, Antonio Pietrangeli and Giuseppe De Santis. When "Ossessione" was completed and released in 1943, it was far from the innocent murder mystery the authorities had expected; after a few screenings in Rome and northern Italy, prompting outraged reactions from Fascist and Church authorities, the film was banned by the Fascist government reestablished in the German occupied part of Italy after the September 1943 armistice. Eventually the Fascists destroyed the film, but Visconti managed to keep a duplicate negative from which all existing prints have been made. After the war, "Ossessione" encountered more problems with mass distribution, this time in the United States. As a result of the wartime production schedule, Visconti had never obtained the rights to the novel and Metro-Goldwyn Mayer began production on another version of the film, directed by Tay Garnett ("The Postman Always Rings Twice", 1946), while the Fascist ban on Visconti's work was still in effect.
Document 8: An Uneventful Story: An Uneventful Story () is a 1986 Polish film directed by Wojciech Jerzy Has, starring Gustaw Holoubek. The film is an adaptation of a short story by Anton Chekhov and tells the story of a professor of medicine who begins an affair with a young pupil.
Document 9: There Is Such a Lad: There Is Such a Lad () is a 1964 Soviet comedy film, directed by Vasily Shukshin. The movie is based on Vasily Shukshin's collection of short stories.
Document 10: Russian Soviet Federative Socialist Republic: On December 25, 1991, the Russian SFSR was renamed the Russian Federation. On December 26, 1991, the USSR was self-dissolved by the Soviet of Nationalities, which by that time was the only functioning house of the Supreme Soviet (the other house, Soviet of the Union, had already lost the quorum after recall of its members by the union republics). After dissolution of the USSR, Russia declared that it assumed the rights and obligations of the dissolved central Soviet government, including UN membership.
Document 11: Doctor Aybolit: Doctor Aybolit (, "Aibolit") is a fictional character from the children's poems "Aybolit" and "Barmaley" by Korney Chukovsky, as far as the children's fantastic novel "Doctor Aybolit" of the same author. The name may be translated as "Ouch, [it] hurts!"
Document 12: The Confession (1970 film): It is based on the true story of the Czechoslovak communist committed leftist Artur London, a defendant in the Slánský trial. Gavras did not intend the film as an anti-communist film but as a plea against totalitarianism and particularly Stalinism.
Document 13: Dissolution of the Soviet Union: In a nationally televised speech early in the morning of December 25, 1991, Gorbachev resigned as president of the USSR – or, as he put it, "I hereby discontinue my activities at the post of President of the Union of Soviet Socialist Republics." He declared the office extinct, and all of its powers (such as control of the nuclear arsenal) were ceded to Yeltsin. A week earlier, Gorbachev had met with Yeltsin and accepted the fait accompli of the Soviet Union's dissolution. On the same day, the Supreme Soviet of the Russian SFSR adopted a statute to change Russia's legal name from "Russian Soviet Federative Socialist Republic" to "Russian Federation," showing that it was now a sovereign state.
Document 14: Trial on the Road: "Trial on the Road" was censored and taken out of circulation in the Soviet Union for 15 years after its release due to its controversial depiction of Soviet soldiers. The film is based on a story by the director's father, Yuri German. The screenplay was written by Eduard Volodarsky.
Document 15: The Vulture (1981 film): Director Yaky Yosha's third feature, The Vulture, first screened in 1981, not long before the first war in Lebanon, dealt with the problematic immortalization industry resultant from young war casualties. The film provoked great controversy among the Israeli public, which felt it has crossed a blood-red line. The Israeli censors cut "The Vulture", but when selected to represent the country at the Cannes Film Festival, it was screened uncut.
ground_truth: December 25, 1991
sub_queries: Who served as director for Aybolit-66? Answer: Rolan Bykov
Rolan Bykov >> country of citizenship Answer: Soviet Union
When did Soviet Union break up? Answer: December 25, 1991