Question: What Russian principal conductor is the music director at one of Russia's oldest opera and ballet houses?

Context paragraphs:
John Lanchbery: John Arthur Lanchbery OBE (15 May 1923 - 27 February 2003) was an English, later Australian, composer and conductor, famous for his ballet arrangements.  He served as the Principal Conductor of the Royal Ballet from 1959 to 1972, Principal Conductor of the Australian Ballet from 1972 to 1977, and Director of the American Ballet Theatre from 1978 to 1980.  Although he resigned from the position of Director of the Royal Ballet in 1972, he continued to conduct regularly for the Company until 2001.

Claudio Abbado: Claudio Abbado, (] ; 26 June 1933 – 20 January 2014) was an Italian conductor.  One of the most celebrated and respected conductors of the 20th century, particularly in the music of Gustav Mahler, he served as music director of the La Scala opera house in Milan, principal conductor of the London Symphony Orchestra, principal guest conductor of the Chicago Symphony Orchestra, music director of the Vienna State Opera, founder and director of Lucerne Festival Orchestra, music director of European Union Youth Orchestra and principal conductor of the Berlin Philharmonic orchestra.

Mikhail Tatarnikov: Mikhail Tatarnikov is a Russian principal conductor and music director of Mikhailovsky Theatre who is known for his production of "The Enchantress" at the Theater an der Wien as well as "The Gambler" at the Opéra de Monte-Carlo.

Bruno Bartoletti: Bruno Bartoletti (Sesto Fiorentino, 10 June 1926 – Florence, 9 June 2013) was an Italian operatic conductor.  His active international career lasted from 1953 to 2007, and he specialized in the Italian repertory and contemporary works.  He was particularly noted for his 51-year association with Lyric Opera of Chicago, as co-artistic director, artistic director, principal conductor, and artistic director emeritus.  He also served as Artistic Director of both the Teatro dell'Opera di Roma (1965–1973) and the Maggio Musicale Fiorentino (1985–1991), and as principal conductor of the Danish Royal Opera (1957–1960), in addition to frequent work as a guest conductor at various major opera houses.

John Axelrod: John Neal Axelrod (born March 28, 1966 in Houston, Texas) is an American conductor.  Axelrod was elected Artistic and Musical Director of the Royal Symphony Orchestra of Seville in 2014 and is Principal Conductor of the Orchestra Sinfonica di Milano, "Giuseppe Verdi", also known as "LaVerdi." / Between 2009 and 2013, Axelrod was Music Director of l'Orchestre National des Pays de la Loire, based in Nantes and Angers, France; and from 2009 to 2011, Axelrod served as Music Director of "Hollywood In Vienna" Gala Concerts with the ORF Radio Symphony Orchestra, Vienna.  He has also served as Music Director and Chief Conductor of the Lucerne Symphony Orchestra from 2004 to 2009, and from 2001 to 2009 as Principal Guest Conductor of Sinfonietta Cracovia.

Gianfranco Masini: Gianfranco Masini (26 November 1937 – 18 June 1993) was an Italian orchestra conductor, primarily known for conducting opera.  During the course of his career he was a principal conductor at the Teatro Lirico Giuseppe Verdi in Trieste and at the Arena di Verona Festival.  He appeared in numerous opera houses in Europe and North America as a guest conductor and was the principal guest conductor of the Stadttheater Bonn in 1990.  At the time of his death, he was the principal conductor and artistic director of Montpellier Opera.

Mikhailovsky Theatre: The Mikhailovsky Theatre (Russian: Миха́йловский теа́тр ) is one of Russia's oldest opera and ballet houses.  It was founded in 1833 and is situated in a historical building on the Arts Square in St. Petersburg.  It is named after Grand Duke Michael Pavlovich of Russia.

Manitoba Chamber Orchestra: The Manitoba Chamber Orchestra was founded in 1972 by Ruben Gurevich.  Gurevich served as music director and principal conductor until 1981.  After a season of guest conductors, English conductor Simon Streatfeild, a founding member of the prestigious London-based chamber orchestra, the Academy of St. Martin in the Fields, was appointed music director and principal conductor in 1982.  He was succeeded by another English conductor, Roy Goodman (2000-2005), and then by Anne Manson, who began her tenure in 2008.

Toshiyuki Shimada: Toshiyuki Shimada (島田 俊行 , Shimada Toshiyuki ) is a Japanese-born American orchestral conductor.  He is Music Director of both the Eastern Connecticut Symphony Orchestra in New London, CT, and the Orchestra of the Southern Finger Lakes in Corning, NY.  He has been Music Director of the Yale Symphony Orchestra of Yale University since 2005, and has been Principal Conductor of the Vienna Modern Masters, in Vienna, Austria, since 1998.  He is also Music Director Laureate of the Portland Symphony Orchestra, in Portland, Maine, which he was Music Director from 1986 to 2006.  Prior to Portland, he was Associate Conductor of the Houston Symphony Orchestra for six years, beginning in 1981.  He also serves as Principal Conductor of the Vienna Modern Masters, in Austria since 1998.

Silvio Varviso: Silvio Varviso (26 February 19241 November 2006) was a Swiss conductor who spent most of his career devoted to conducting opera.  He began his conducting career working in minor opera houses in Switzerland in the mid-1940s.  He became the principal conductor of the opera house in Basel in 1956 where he served for six years.  In the late 1950s he began appearing with major opera houses on the international stage as a guest conductor.  During the 1960s, he became a fixture at the Metropolitan Opera in New York City and at the Royal Opera House in London.  In 1965 he became the music director of the Royal Swedish Opera, and later in his career served as the music director of the Staatsoper Stuttgart and the Paris Opera.  During the early 1990s he became a permanent guest conductor at the Vlaamse Opera where he remained active up until his death.

Supporting paragraphs: Mikhail Tatarnikov Mikhailovsky Theatre
Answer: Mikhail Tatarnikov