Question: What principal dancer in the Bolshoi ballet, born in 1988, is a student of Valery Lagunov?

full_context: Document 1: Valery Kritskov: Valery Kritskov is a Russian conductor who used to take conducting lessons at the Moscow Institute of Culture which were taught by Kirill Tikhonov. He graduated from there in 1988 and then worked in Moscow-based Helikon Opera till he got employed with Novaya Opera in 2002. While there, he conducted many operas including Nikolai Rimsky-Korsakov's "The Snow Maiden" and "The Tsar’s Bride" as well as Anton Rubinstein's "The Demon" and Tchaikovsky's "The Maid of Orleans". He also conducted works by the Italian composers such as Pietro Mascagni's "Cavalleria rusticana" and Ruggero Leoncavallo's "Pagliacci" and German such as Richard Wagner's "Lohengrin" and Strauss' "Die Fledermaus" as well as a concert dedicated to Vincenzo Bellini. Besides operas, he is also known for his conducting of the Russian ballet based on works by Tchaikovsky and Sergei Prokofiev as well as German and Austrian ballet composers such as Ludwig Minkus and Charles Gounod. Later on, he became a conductor of the Coppélia ballet which was based by Léo Delibes work and was produced by Imperial Russian Ballet. Currently he has two CD recordings called "Chorus of the Novaya Opera Theatre of Moscow" and the "Soloists of the Novaya Opera Theatre of Moscow".
Document 2: Vladislav Bulakhov: Vladislav Bulakhov (Russian: Владислав Булахов ) is a Russian conductor, violinist, and Honoured Artist of Russia. He graduated from the Gnessin State Musical College in 1984 and prior to it have served under guidance from Igor Zhukov at the Moscow Chamber Orchestra. His conducting career began when he introduced "The Seasons" at the First International Festival of Classical Guitar in November 1994. After that he performed it in Moscow and Germany in both of which it boasted him a success.
Document 3: Vladislav Galkin: Vladislav Borisovich Galkin (Russian: Владисла́в Бори́сович Га́лкин ; 25 December 1971 – 25 February 2010) was a highly popular Russian actor who starred in fifty seven films including several TV serials, such as "Spetsnaz" (2002), "The Master and Margarita" (2005–2006) and "Dikari" (2006).
Document 4: Vaslav Nijinsky: Vaslav Nijinsky (also Vatslav; Russian: Ва́цлав Фоми́ч Нижи́нский ; ] ; Polish: "Wacław Niżyński" ; 12 March 1889/18908 April 1950) was a Russian ballet dancer and choreographer of Polish descent, cited as the greatest male dancer of the early 20th century. He was celebrated for his virtuosity and for the depth and intensity of his characterizations. He could dance "en pointe", a rare skill among male dancers at the time and was admired for his seemingly gravity-defying leaps.
Document 5: Yury Grigorovich: Yury Nikolayevich Grigorovich (Russian: Ю́рий Никола́евич Григоро́вич ; born 2 January 1927 in Leningrad) is a Soviet and Russian dancer and choreographer who dominated the Russian ballet for 30 years.
Document 6: Pasha Kovalev: Pavel "Pasha" Kovalev (Russian: Па́вел "Па́ша" Ковалёв ; born 19 January 1980) is a Russian professional latin and ballroom dancer.
Document 7: Aleksey Burago: Aleksey Burago (Director) graduated from Moscow Academy of Theatre Arts (GITIS) and studied with world famous theater director Pyotr Fomenko. His Moscow directing credits include: "Beyond Recognition." Off-Broadway, he has directed "Gamblers," "An Absolutely Happy Village", "Ah! My Dear Andersen" and "On the Eve." At HB Playwrights Foundation, he has directed "Vassa," "Picnic on the Battlefield," "The Master and Margarita," "Wonder Bread" and "Lady with the Lapdog with Jokes and a Happy Ending." His TV credits include "The Queen of Spades" (Actor/Director). His awards include 1992 Best Director - St. Petersburg Comedy Festival and 1993 Best Director - Moscow Annual Festival of Classical Plays. He has been on faculty at Theatre Academy and Conservatory in St. Petersburg, Danish Theatre School GITIS and Manhattanville College, where he taught acting and staged the short stories of Anton Chekhov. The Artistic and Founding Director of The Russian Arts Theater & Studio, Aleksey Burago is now based in New York City. He is an Associate Member of SSDC and also Director-in-Residence at Bilkent University in Ankara, Turkey.
Document 8: Rudolf Nureyev: Rudolf Khametovich Nureyev (Bashkir: Рудольф Хәмит улы Нуриев , Tatar: Рудольф Хәмит улы Нуриев , Russian: Рудо́льф Хаме́тович Нуре́ев ; 17 March 1938 – 6 January 1993) was a Soviet ballet dancer and choreographer. He was director of the Paris Opera Ballet from 1983 to 1989 and its chief choreographer until October 1992.
Document 9: Mikhail Baryshnikov: Mikhail Nikolayevich Baryshnikov (Russian: Михаи́л Никола́евич Бары́шников , Latvian: "Mihails Barišņikovs" ; born January 27, 1948), nicknamed "Misha" (Russian diminutive of the name "Mikhail"), is a Soviet and American dancer, choreographer, and actor.
Document 10: Vladimir Vasiliev (dancer): Vladimir Viktorovich Vasiliev (Russian: Влади́мир Ви́кторович Васи́льев), born 18 April 1940 in Moscow, Russia, is a Russian ballet dancer and choreographer. He was a principal dancer with the Bolshoi Ballet and its director from 1995 to 2000.
Document 11: Roberto Bolle: Roberto Bolle (Casale Monferrato, March 26, 1975) is an Italian danseur. He is currently a "principal dancer" with the American Ballet Theatre and a principal dancer "étoile" at La Scala Theatre Ballet. Bolle also dances regularly as a guest artist with the world’s leading companies, including The Royal Ballet, the Mariinsky Ballet, the Bolshoi Ballet and the Paris Opera Ballet.
Document 12: Valery Lagunov: Lagunov was born on July 2, 1942 in Moscow, Russia. In 1962 he graduated from the Moscow State Choreographic Academy where his teacher was Aleksey Yermolayev, and same year joined Bolshoi Ballet. He first appeared in "Scriabiniana" as "Garland" in 1962 and four next year played in "Sleeping Beauty" as "Prince". In 1966 he played as one of the shepherd boys in "the Nutcracker" and five years later appeared as "Archon" in "Icarus". In 1972 he participated in the "Swan Lake" where he played a role of "Evil genius" and the same year played a role as a "dance teacher" in "Cinderella". Three years later he appeared as "Albrecht" in "Giselle" and by 1976 played a role of "black man" in "Mozart and Salieri". The same year he was named "Merited Artist of the Russian Federation" and also appeared as "Don Juan" in "Love for Love". In 1979 he graduated from the Russian University of Theatre Arts and retired as a dancer in 1983. Since 1996 he teaches such future ballet dancers as Mikhail Lobukhin and Vladislav Lantratov.
Document 13: Vladislav Lantratov: Vladislav Lantratov (Russian: Владислав Валерьевич Лантратов ; 8 October 1988) is a Russian principal dancer in the Bolshoi Ballet.
Document 14: Irek Mukhamedov: Irek Mukhamedov OBE (born March 8, 1960 in Kazan, USSR), is a Soviet-born ballet dancer of Tatar origin who has danced with the Bolshoi Ballet & the Royal Ballet He trained at the Moscow Choreographic Institute under the guidance of Alexander Prokofiev between 1970 and 1978. Upon graduation he joined the Classical Ballet Company, where he spent three years touring around the world. It was with this company that he first danced Romeo, a role that was to become one of his most acclaimed. In 1981 he won the Grand Prix and Gold Medal at the International Ballet Competition in Moscow and was immediately invited to join the Bolshoi Ballet as a principal dancer, where he not only became Grigorovich's favourite danseur but went to become the youngest man ever to dance the leading role in "Spartacus". After leaving the Soviet Union, he became a Senior Principal Dancer with the Royal Ballet in London, remaining with the company for many years and dancing lead roles in the classic ballets as well as the English repertoire.
Document 15: Vladimir Yaroshenko: Vladimir Yaroshenko (Russian: Владимир Ярошенко; born November 2, 1985 in Slavyansk-na-Kubani) – Polish-Russian ballet dancer, first soloist with Yury Grigorovich’s Ballet Theatre, Krasnodar, trained in classical Russian ballet school. Polish resident since 2007, engaged with Teatr Wielki, Warsaw, where since September 2010 is a first soloist of Polish National Ballet under direction of Krzysztof Pastor.
ground_truth: Vladislav Lantratov