Question: What company founded in 1776, was Stanislav Vlasov a former principal artist for?

Context paragraphs:
Steven Melendez: Steven Melendez is a classical dancer from the USA.  He is a principal artist with the New York Theatre Ballet.  Formerly, he was a principal artist with the Estonian National Ballet and a soloist with Ballet Concierto in Buenos Aires, Argentina.

Moscow Ballet (United States): Moscow Ballet has toured the United States and Canada during the holiday season since 1993 and is exclusively represented by Talmi Entertainment Inc for these tours.  There are 70 to 80 Russian-trained classical dancers on the annual N.A. tour who fly in from the former republic of Russia.  Stanislav Vlasov, a former principal artist of the Bolshoi Ballet, was the first artistic director on the North American tour in 1993.  Vlasov's debut in the United States was at Carnegie Hall in 1957.

Josephine Lucchese: Josephine Lucchese (July 24, 1893 – September 10, 1974) was an American operatic soprano who had an active international singing career during the 1920s and 1930s.  A skilled coloratura soprano, she was particularly admired for her portrayals of Rosina in "The Barber of Seville", Violetta in "La traviata", and the title role in "Lucia di Lammermoor".  She began her opera career in 1920 with the San Carlo Opera Company; a touring opera company in the United States.  She was a resident artist with the Philadelphia Grand Opera Company from 1929-1932, and was a principal artist with the Dutch National Opera during the 1930s.  She also appeared as a guest artist with American and European opera houses during her career.

Angela Leigh: Angela Leigh was a founding member and former principal dancer of the National Ballet of Canada, and a former principal dancer and soloist with the Royal Ballet.

Muhammad Saeed (dentist): Professor Dr. Muhammad Saeed is a dental surgeon and one of the pioneers in the field of Oral and maxillofacial surgery in Pakistan .  He is the former Principal of Nishtar Institute of Dentistry, Multan, former Principal De'Montmorency College of Dentistry, Lahore and Sharif_Medical_and_Dental_College, Lahore.

Yosvani Ramos: Yosvani Ramos (born Yosvani Sabdiel Ramos Fontes on 23 June 1979) is a Cuban ballet dancer.  He was a principal artist with The Australian Ballet from January 2008 until April 2013, after nine years as a principal with the English National Ballet.  He joined Cincinnati Ballet as a principal dancer in August 2014 where he remained until the end of that season - May 2015.  He is currently contracted to Colorado Ballet in Denver as a principal dancer, having commenced in August 2015.

Bolshoi Ballet: The Bolshoi Ballet is an internationally renowned classical ballet company, based at the Bolshoi Theatre in Moscow, Russian Federation.  Founded in 1776, the Bolshoi is among the world's oldest ballet companies.  It only achieved worldwide acclaim, however, in the early 20th century when Moscow became the capital of Soviet Russia.  Along with the Mariinsky Ballet in Saint Petersburg, the Bolshoi is recognised as one of the foremost ballet companies in the world.

History of North Coast Section football: North Coast Section (NCS) Championships were not conducted from 1931 through 1974.  According to Paul Gaddini, NCS Commissioner of Athletics from 1972 to 2000, on October 31, 1972, Robert Boehme, Principal of Calistoga High School, requested that North Coast Section conduct championship competition in team sports.  Subsequently, a committee consisting of Sam Zackheim, Principal, Monte Vista H.S., Will Sawyer, former Principal, John F. Kennedy H.S. - Fremont, Jim Hanretty, Principal, Tamalpais-Mill Valley, Rich Abel, former Athletic Director, Richmond H.S., and Robert Boehme were appointed to study Section Playoffs.  The committee worked in conjunction with separate coaches committees representing various team sports.  Based on the recommendation and work by the committee the NCS Board of Managers approved football playoffs at its January 18, 1975 meeting and reaffirmed that decision at its May 3, 1975 meeting .  Apparently it was a close vote, and the deciding vote to resume NCS Football Playoffs was cast by then NCS President Dutch Williams, representing the Alameda County Athletic League.

Sitmar Cruises: Sitmar Cruises and its predecessor Sitmar Line were company names derived from the acronym for the Societa Italiana Trasporti Marittimi (English: Italian Maritime Transport Company ).  SITMAR originally was an Italian shipping line founded by Russian émigré Alexandre Vlasov, however the company's headquarters were later transferred to Monaco.  Vlasov initially operated cargo services from 1937, gradually replacing these with passenger services from 1947 until 1988, when SITMAR was sold to the Peninsular and Oriental Steam Navigation Company (P&O).  After the sale, most of the former SITMAR ships were transferred to the fleet of P&O subsidiary Princess Cruises, while one, TSS Fairstar, became the sole vessel of the newly created P&O-Sitmar Cruises (later P&O Holidays).  As of April 2014, one briefly named former SITMAR ship (Sitmar Fairmajesty) is still operational, as P&O Cruises Australia's Pacific Pearl.  However, two other vessels originally ordered by SITMAR but delivered to P&O also currently operate from Australia, as Pacific Jewel and Pacific Dawn.

Blakeley White-McGuire: Blakeley White-McGuire (born October 28, 1974 in Baton Rouge, Louisiana, is an award-winning dancer, choreographer, répétiteur, and educator.  She is a Principal Guest Artist and former Principal Dancer of Martha Graham Dance Company.  Described by Gia Kourlas of the "New York Times" in 2007 as having a "powerful technique and dramatic instinct with an appealing modern spunk", White-McGuire has received widespread critical acclaim as a Graham dancer.

Supporting paragraphs: Moscow Ballet (United States) Bolshoi Ballet
Answer: Bolshoi Ballet