Question: Valery Lagunov is the teacher of the dancer in what famous ballet troupe?

Context paragraphs:
Vladislav Lantratov: Vladislav Lantratov (Russian: Владислав Валерьевич Лантратов ; 8 October 1988) is a Russian principal dancer in the Bolshoi Ballet.

National Ballet of China: The National Ballet of China (NBC), known in China as the Central Ballet Troupe was founded on 31 December 1959.  It is the mainland Chinese national ballet troupe.

Enkel Zhuti: Enkel Zhuti is an Albanian male ballet dancer.  He has a career in ballet in Italy where he has been part of a ballet troupe in Milan.

Vaganova Academy of Russian Ballet: The Vaganova Academy of Russian Ballet is a school of classical ballet in Saint Petersburg, Russia.  Established in 1738 during the reign of Empress Anna, the academy was known as the Imperial Ballet School up until Soviet times, when, after a brief hiatus, the school was re-established as the Leningrad State Choreographic Institute.  In 1957, the school was renamed in honor of the renowned pedagogue Agrippina Vaganova, who cultivated the method of classical ballet training that has been taught there since the late 1920s.  Graduates of the school include some of the most famous ballet dancers, choreographers and teachers in history and many of the world's leading ballet schools have adopted elements of the Vaganova method into their own training.

Julie Alix de la Fay: Léonne-Julie Alix de la Fay, also known as Julianne Bournonville and Madame Alix (14 December 1746 or 1748 – 14 March 1826), was a Belgian ballet dancer and dance pedagogue, who was to play an important part in the development of the Royal Swedish Ballet.  She was the sister of the famous ballet dancer Antoine Bournonville and the aunt of August Bournonville.

Ballet Folklórico Oro Lenca: Ballet Folklórico de Honduras Oro Lenca is a Honduran folkloric ballet troupe in La Esperanza.  It was founded in 2008 and presents dances and costumes that reflect the traditional culture of Honduras.  This dance troupe hosts an annual folk dance festival, "El Grande de Grandes", and represents Honduran culture internationally.  It also mentors nascent dance groups in villages, towns, and cities of Honduras.  In November 2015, the National Congress of Honduras designated Ballet Folklórico Oro Lenca "Patrimonio Cultural de la Nación" (cultural heritage of the nation), and subsequently designated "Ambassadors of Art and Culture" by executive decree.

Gul Bardhan: Gul Bardhan (1928 – 29 November 2010) was a choreographer and theatre personality based in Bhopal, Madhya Pradesh, India.  She was associated with the Indian People's Theatre Association.  She was the co-founder of the Little Ballet Troupe.  a dance and puppet company formed in Bombay in 1952, and headed by Shanti Bardhan, her husband.  After the death of her husband in 1954, Gul Bardhan headed the troupe.  The troupe was later renamed "Ranga Shri Little Ballet Troupe" and performed in different countries.  She received several awards, including the Sangeet Natak Academy award and the Padma Shri (the fourth highest civilian award of India) in 2010.

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.

Lucien Petipa: Lucien Petipa (December 22, 1815 – July 7, 1898) was a French ballet dancer in the early 19th century (Romantic period), who was the brother of Marius Petipa, the famous ballet master of the Russian Imperial Ballet.  He was born in Marseilles and died in Versailles.

Guangzhou Ballet: The Guangzhou Ballet Troupe is a classical ballet company based in Guangzhou, China.  In addition to works from the classical European ballet repertoire, the company performs works of classical and contemporary Chinese ballet.  The company is one of the top four ballet companies in China.  It was founded in 1974, and is currently headed by dancer Zhang Dandan.  The company tours internationally.

Supporting paragraphs: Valery Lagunov Vladislav Lantratov
Answer: Bolshoi Ballet