Question: How long is the border with the country having Embassy of China in a city housing the institute attended by Eduard Rozovsky?

full_context: Document 1: 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 2: 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).
Document 3: 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 4: Embassy of Russia in Prague: The Embassy of Russia in Prague is the diplomatic mission of the Russian Federation to the Czech Republic. The chancery is located at nám. Pod kaštany 1 in the Bubeneč neighbourhood of Prague 6 district in Prague.
Document 5: 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 6: 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 7: 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 8: Igor Kvasha: Igor Kvasha was born in Moscow, the son of scientist Vladimir Ilich Kvasha, of the faculty of Mendeleev Russian University of Chemistry and Technology. Kvasha graduated from the Moscow Art Theater School, where he was taught by Aleksander Karev. After graduation, he joined the Moscow Art Theater troupe and performed there for two years (1955-1957). In 1957 he started work at the newly established Sovremennik Theater, where he remained.
Document 9: 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 10: Zaid Orudzhev: Zaid Orudzhev was born in Baku, entered the Faculty of Philosophy at Lomonosov Moscow State University in the early 1950s, graduating in 1955. For the next 12 years, he taught at a number of educational institutions back in Baku (mainly at the state university), during which time he was awarded a doctorate for his thesis on “The problems of dialectical logic in the economic research of Karl Marx”. In 1967-1969 he founded and was at the head of the department of philosophy at the Moscow Institute of Electronic Technology.
Document 11: 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 12: 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 13: 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 14: Gavrik Losey: Gavrik was born in New York, the son of film director Joseph Losey and fashion designer Elizabeth Hawes. He attended the Little Red SchoolHouse in Manhattan, Poughkeepsie Day School in Poughkeepsie, and high school in New Jersey. After graduating, he travelled with his blacklisted father to England where he attended University College London.
Document 15: 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).
ground_truth: 6,846 kilometres
sub_queries: Eduard Rozovsky >> educated at 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