Question: How long is the border with the country where the Embassy of China is located in the city where Sergei Vronsky was educated?

full_context: Document 1: 2nd Yerevan Golden Apricot International Film Festival: The 2nd Yerevan Golden Apricot International Film Festival was a film festival held in Yerevan, Armenia from 12–17 July 2005. Entries were submitted from 45 countries such as Russia, Argentina, the Netherlands, Afghanistan, Malaysia, Chile, Turkey, Finland, India, Israel, Iran and Canada. Following the selection, 144 films from 37 countries were included into competition and non-competition programs. Included amongst the guests and participants were some of the most highly acclaimed figures of world cinema such as Abbas Kiarostami, Krzysztof Zanussi, and Nikita Mikhalkov who were given Lifetime Achievement Awards. The main prizewinners of the 2nd Golden Apricot Festival were Alexander Sokurov, Russia, with his film The Sun (Feature Film Competition), Pirjo Honkasalo, Finland, with The 3 Rooms of Melancholia (Documentary Competition), and Arman Yeritsyan, Armenia, with Under the Open Sky (Armenian Panorama Competition).
Document 2: Khodzhakuli Narliev: Narliev graduated from Moscow's Gerasimov Institute of Cinematography (VGIK) in 1960. His first film of note was working with director Bulat Mansurov on "The Competition" in 1963, a notable film in the development of Turkmen national cinema.
Document 3: Sergei Vronsky: Sergei Arkadevich Vronsky (, 3 September 1923 in Rostov-on-Don – June 21, 2003) was a Soviet and Russian cinematographer. Sergei Vronsky graduated from the Gerasimov Institute of Cinematography in 1953 and worked with Ivan Pyryev and Georgi Daneliya. He received USSR State Prize in 1981 for the film "Autumn Marathon".
Document 4: Vladimir Kobekin: He studied under Sergei Slonimsky at the Leningrad Conservatory. After graduating in 1971 he taught music composition at the Urals Mussorgsky State Conservatoire (1971–1980). From 1992 to 1995 he served as chairman of the Ural branch of the Union of Soviet Composers. Since 1995 he has been a senior lecturer in the composition department at the Urals Mussorgsky State Conservatoire. Among his notable pupils is opera composer Anastasia Bespalova. In 1987 he won the Honoured Representative of the Arts Award, and later that year he was made a laureate of the USSR State Prize.
Document 5: Embassy of China in Moscow: The Embassy of China in Moscow (Russian: Посольство Китайской Народной Республики в Российской Федерации, Chinese: 中华人民共和国驻俄罗斯联邦大使馆) is the chief diplomatic mission of China in the Russian Federation. It is located at 6 Druzhby Street () in the Ramenki District of Moscow.
Document 6: Embassy of Latvia in Moscow: The Embassy of the Republic of Latvia in Moscow is the chief diplomatic mission of Latvia in the Russian Federation. It is located at 3 Chaplygina Street () in the Basmanny District of Moscow.
Document 7: Embassy of Italy in Moscow: The Embassy of the Republic of Italy in Moscow is the chief diplomatic mission of Italy in the Russian Federation. It is located at 5 Denezhny Lane () in the Khamovniki District of Moscow.
Document 8: Central Asia: Mentioned five countries of so called ``Central Asia ''region are situated far from the geographical midpoint of Asia in Russian Southern Siberia, the largest country of the`` Central Asia'' region - Kazakhstan - is partially out of Asia in Europe. Central Asia has a population of about 70 million, consisting of five republics: Kazakhstan (pop. 18 million), Kyrgyzstan (6 million), Tajikistan (9 million), Turkmenistan (6 million), and Uzbekistan (31 million). Afghanistan (pop. 35 million), which is a part of South Asia, is also sometimes included in Central Asia, as is Mongolia (pop. 3 million), which is part of East Asia.
Document 9: Kazakhstan: It shares borders of 6,846 kilometres (4,254 mi) with Russia, 2,203 kilometres (1,369 mi) with Uzbekistan, 1,533 kilometres (953 mi) with China, 1,051 kilometres (653 mi) with Kyrgyzstan, and 379 kilometres (235 mi) with Turkmenistan. Major cities include Nur-Sultan, Almaty, Karagandy, Shymkent, Atyrau, and Oskemen. It lies between latitudes 40° and 56° N, and longitudes 46° and 88° E. While located primarily in Asia, a small portion of Kazakhstan is also located west of the Urals in Eastern Europe.Kazakhstan's terrain extends west to east from the Caspian Sea to the Altay Mountains and north to south from the plains of Western Siberia to the oases and deserts of Central Asia. The Kazakh Steppe (plain), with an area of around 804,500 square kilometres (310,600 sq mi), occupies one-third of the country and is the world's largest dry steppe region. The steppe is characterised by large areas of grasslands and sandy regions. Major seas, lakes and rivers include the Aral Sea, Lake Balkhash and Lake Zaysan, the Charyn River and gorge and the Ili, Irtysh, Ishim, Ural and Syr Darya rivers.
Document 10: Vikentii Trofimov: In 1899 Vikentii Trofimov graduated from Stroganov Central College of Technical Drawing (now Stroganov Moscow State University of Arts and Industry, informally named Stroganovka). He and his friend Ignaty Nivinsky were both recommended for the gold medal. As there was only one gold medal, the two friends instead were encouraged to travel and teach abroad, and they agreed. A little later Trofimov married Ignaty's sister Vera, a very talented person with abilities in theatre. Trofimov continued his painting education in the private school of Zhukovsky and Halyavin, and travelled extensively in Europe.
Document 11: Geography of Russia: Truly alpine terrain appears in the southern mountain ranges. Between the Black and Caspian seas, the Caucasus Mountains rise to impressive heights, forming a boundary between Europe and Asia. One of the peaks, Mount Elbrus, is the highest point in Europe, at 5,642 meters. The geological structure of the Caucasus extends to the northwest as the Crimean and Carpathian Mountains and southeastward into Central Asia as the Tian Shan and Pamirs. The Caucasus Mountains create an imposing natural barrier between Russia and its neighbors to the southwest, Georgia and Azerbaijan.
Document 12: Sergei Martynov (politician): Sergei Martynov was born on February 22, 1953 in Gyumri, Armenian SSR. He graduated from the Moscow State Institute of International Relations, "summa cum laude", in 1975.
Document 13: Kazakhstan: With an area of 2,700,000 square kilometres (1,000,000 sq mi) – equivalent in size to Western Europe – Kazakhstan is the ninth-largest country and largest landlocked country in the world. While it was part of the Soviet Union, Kazakhstan lost some of its territory to China's Xinjiang autonomous region and some to Uzbekistan's Karakalpakstan autonomous republic.
Document 14: Eduard Rozovsky: Rozovsky was an alumna of Russian State Institute of Cinematography (VGIK), which is now called the Gerasimov Institute of Cinematography. His father was Alexander Evseevich Rozovsky, and his mother was Nonna (Anna) Naumovna (née Poliak).He began his career at the Lennauchfilm film studio, where he started as a cameraman. He then joined Lenfilm studio, where he worked as a cinematographer.
Document 15: Rustam Ibragimbekov: Rustam Ibragimbekov graduated from Azerbaijan Oil and Chemistry Institute, then studied script writing and film directing at the Gerasimov Institute of Cinematography in Moscow. His writing credits include more than 40 film and television scripts, numerous plays and pieces of prose, and nearly all of his scripts were eventually made into full feature or TV films, including "White Sun of the Desert" (1970, Белое солнце пустыни), "Interrogation" (1979, Допрос), "Guard Me, My Talisman" (1986, Храни меня, мой талисман), "Urga" (Урга, Территория любви, 1991), "Burnt by the Sun" (1994, Утомлённые солнцем), "The Barber of Siberia" (1998, Сибирский цирюльник), "East/West" (1999), "Broken Bridges" (2004) and "Nomad" (2005/2007).
ground_truth: 6,846 kilometres
sub_queries: What is the name of university that educated Sergei Vronsky? Answer: Gerasimov Institute of Cinematography
Gerasimov Institute of Cinematography >> located in the administrative territorial entity Answer: Moscow
Embassy of China, Moscow >> country Answer: Russia
How long is the border with Russia ? Answer: 6,846 kilometres