Question: The director of the film Dau is the son of what top Russian animation director?

full_context: Document 1: Eldar Ryazanov: Eldar Alexandrovich Ryazanov (Russian: Эльда́р Алекса́ндрович Ряза́нов ; 18 November 1927 – 30 November 2015) was a Russian film director and screenwriter whose popular comedies, satirizing the daily life of the Soviet Union and Russia, are celebrated throughout the former Soviet Union.
Document 2: Serguei Kouchnerov: Serguei Kouchnerov (born 22 June 1960 in Rahachow, Belarusian SSR) - artist, animator, director, story artist and screenwriter. He started his career as an animator and director in Kiev, Ukraine. In 1992, he was hired by Walt Disney Feature Animation as a character animator and came to the United States of America, where he currently lives and works at Illumination Entertainment.
Document 3: Dau (film): Dau is a Russian film directed by Ilya Khrzhanovsky. The film deals with the life of the Nobel Prize winning Soviet scientist Lev Landau. The movie is one of Russia's largest and most controversial cinematic projects.
Document 4: Ilya Khrzhanovsky: Ilya Andreevich Khrzhanovsky (Russian: Илья́ Андре́евич Хржановский ; born August 11, 1975 in Moscow, Soviet Union) is a Russian film director. He is the son of Andrei Khrzhanovsky (b. 1939), one of the top Russian animation directors, and the grandson of the artist and actor (1905—1987).
Document 5: Yakov Protazanov: Yakov Alexandrovich Protazanov (Russian: Я́ков Алекса́ндрович Протаза́нов ; January 23 (O.S. February 4), 1881 – August 8, 1945) was a Russian and Soviet film director and screenwriter, and one of the founding fathers of cinema of Russia. He was an Honored Artist of the Russian SFSR (1935) and Uzbek SSR (1944).
Document 6: Mikhail Krichman: Mikhail Krichman (Михаил Владимирович Кричман; born 1967) is a Russian cinematographer who received a Golden Osella award at the 67th Venice Film Festival for "Silent Souls". He photographed all of Andrey Zvyagintsev's films, including "The Return" (2003), "The Banishment" (2007), "Elena" (2010) and "Leviathan" (2014). Zvyagintsev claims that Krichman (an engineer by profession) learned his craft by reading "American Cinematographer". Krichman also shot "Miss Julie" for Norwegian director Liv Ullmann.
Document 7: Evgenii Georgievich D'yakonov: D'yakonov was a Ph.D. student of Sergei Sobolev. He worked at the Moscow State University. He authored over hundred papers and several books. D'yakonov was recognized for his pioneering work in the 60s–80s on efficient spectrally equivalent preconditioning for linear systems and eigenvalue problems. In the last decade, strengthened Sobolev spaces became D'yakonov's main topic of research, e.g., (D'yakonov, 2004).
Document 8: Dasha Charusha: Daria Borisovna Charusha (née Simonenko; born August 25, 1980), best known by her stage name Dasha Charusha, is a Russian singer, songwriter, pianist and an actress based in the United States. Her notable debut singles 'Kosmos' and '16' published in March and October 2014 have attracted the significant attention of both local and foreign media to notice her unique conceptual classic sounds. She is married to Ilya Naishuller, the frontman of punk-rock band Biting Elbows and the director of the first ever action/sci-fi POV movie "Hardcore Henry", a movie which was inspired by a soundtrack written by Charusha, and in which she appears.
Document 9: Yuriy Norshteyn: Yuriy Borisovich Norshteyn, PAR (Russian: Ю́рий Бори́сович Норште́йн ), or Yuri Norstein (born 15 September 1941), is a Soviet and Russian animator best known for his animated shorts, "Hedgehog in the Fog" and "Tale of Tales". Since 1981 he has been working on a feature film called "The Overcoat", based on the short story by Nikolai Gogol of the same name. According to the "Washington Post", "He is considered by many to be not just the best animator of his era, but the best of all time".
Document 10: Lev Landau: Lev Davidovich Landau (Russian: Лев Дави́дович Ланда́у ; ] ; January 22 [O.S. January 9] 1908 1 April 1968) was a Soviet physicist who made fundamental contributions to many areas of theoretical physics. His accomplishments include the independent co-discovery of the density matrix method in quantum mechanics (alongside John von Neumann), the quantum mechanical theory of diamagnetism, the theory of superfluidity, the theory of second-order phase transitions, the Ginzburg–Landau theory of superconductivity, the theory of Fermi liquid, the explanation of Landau damping in plasma physics, the Landau pole in quantum electrodynamics, the two-component theory of neutrinos, and Landau's equations for "S" matrix singularities. He received the 1962 Nobel Prize in Physics for his development of a mathematical theory of superfluidity that accounts for the properties of liquid helium II at a temperature below ( ).
Document 11: Leviathan (2014 film): Leviathan (Russian: Левиафан , "Leviafan") is a 2014 Russian drama film directed by Andrey Zvyagintsev, co-written by Zvyagintsev and Oleg Negin, and starring Aleksei Serebryakov, Elena Lyadova, and Vladimir Vdovichenkov. According to Zvyagintsev, the story of Marvin Heemeyer in the United States inspired him and it was adapted into a Russian setting, but critics compare the story to the more similar biblical story of Naboth's Vineyard, where a King vies for his subjects' land and is motivated by his Queen to obtain it in a sly manner. The character development of the protagonist parallels another biblical figure, Job. The producer Alexander Rodnyansky has said: "It deals with some of the most important social issues of contemporary Russia while never becoming an artist's sermon or a public statement; it is a story of love and tragedy experienced by ordinary people". Critics noted the film as being formidable, dealing with quirks of fate, power and money.
Document 12: Iosif Boyarsky: Iosif Yakovlevich Boyarsky (November 7, 1917 – March 12, 2008) was a Russian animator and director, the longtime Director of the Model Animation Association of Soyuzmultfilm Studio, an award-winning Russian animation studio based in Moscow.
Document 13: Andrei Konchalovsky: Andrei Sergeyevich Mikhalkov-Konchalovsky (Russian: Андре́й Серге́евич Михалко́в-Кончало́вский ; born August 20, 1937) is a Russian film director, film producer and screenwriter. He was a frequent collaborator of Andrei Tarkovsky earlier in his career. He is the son of Natalia Konchalovskaya and Sergey Mikhalkov, and brother to Nikita Mikhalkov who is also a well known Russian film director.
Document 14: Ilya Naishuller: Ilya Viktorovich Naishuller ("Russian": Илья Викторович Найшуллер; born 1983, Moscow, USSR) is a Russian musician, film director, and screenwriter. He is a member of the Russian indie rock band Biting Elbows.
Document 15: Dusha: Dusha (Russian: Душа , English translation: "Soul") is a 1981 Soviet musical drama film written by Alexander Borodyansky and directed by Alexander Stefanovich, starring Sofia Rotaru and Mikhail Boyarsky. The movie features songs performed by Sofia Rotaru, Mikhail Boyarsky and the Russian rock band Mashina Vremeni (Time Machine). The movie has substantial philosophical dialogue about the self-criticism of an artist and the existential approach to the golden mean between artistic creation and respect for human dignity.
ground_truth: Andrei Khrzhanovsky