Question: Who is a Russian professional latin and ballroom dancer, in series 8 of broadcast from Wembley Arena on 19 November with all proceeds going to the BBC charity, Children in Need?

Context paragraphs:
Michael Malitowski: Michael Malitowski is a ballroom dancer, a former World Latin Dance Champion with his partner Joanna Leunis.  Michael (christened "Michał") was born 28 May 1980, in Zielona Góra, Poland.  His partnership with Leunis has, since 2002, resulted in a string of victories: in 2008 and 2009 they won the World Professional Latin title, and in 2012 they won first place in Latin dance at the Blackpool Dance Festival.  This is the prestigious Open British Championships held every year in Blackpool, England.  Before that, he won the Polish Latin dance championship four times with Iwona Golczak.

Pasha Kovalev: Pavel "Pasha" Kovalev (Russian: Па́вел "Па́ша" Ковалёв ; born 19 January 1980) is a Russian professional latin and ballroom dancer.

Joanna Leunis: Joanna Leunis, born 22 May 1981 in Rocourt, Liège, Belgium, is a professional Latin ballroom dancer.  With Michael Malitowski, she is a former professional World Latin Dance Champion and the current International Latin American Dance Champion.  The couple represented Poland until 2011, representing England from then on.

Witney Carson: Witney Capri Carson McAllister (born October 17, 1993) is an American professional Latin and ballroom dancer, choreographer, and actress.  She first gained attention in 2012, when the 18-year-old finished ladies' second runner-up on "So You Think You Can Dance": season 9.  Carson continued her professional dancing career in early 2013 as a troupe dancer on "Dancing with the Stars": seasons 16 and 17.  Carson was promoted to being a "professional partner" in season 18.  She returned as a professional for season 19.  She and her partner Alfonso Ribeiro were announced the winners of season 19 on November 25, 2014, making her one of five professional dancers to win the mirror ball trophy within their first two seasons.  For that season, Carson received a nomination for the Primetime Emmy Award for Outstanding Choreography.

Oti Mabuse: Otlile "Oti" Mabuse (born 8 August 1990) is a South African professional Latin American and ballroom dancer.  She is best known as a professional dancer on the British TV series, "Strictly Come Dancing", and its German equivalent, "Let's Dance".

Strictly Come Dancing (series 9): Strictly Come Dancing returned for its ninth series on 10 September 2011 with a launch show, with the live shows starting on 30 September and 1 October 2011.  The show was broadcast from Wembley Arena on 19 November with all proceeds going to the BBC charity, Children in Need.  The final took place at the Blackpool Tower Ballroom and was the first episode in 3D, and was shown on BBC HD and 18 cinemas around the country.  As in series 8 there are 14 couples with one new male professional, Pasha Kovalev, replacing Jared Murillo.

The Freddie Mercury Tribute Concert: The Freddie Mercury Tribute Concert for AIDS Awareness was a benefit concert held on Easter Monday, 20 April 1992 at Wembley Stadium in London, England for an audience of 72,000.  The concert was produced for television by Ray Burdis and broadcast live on television and radio to 76 countries around the world, with an audience of up to one billion.  The concert was a tribute to the life of Queen lead vocalist, Freddie Mercury, with proceeds going to AIDS research.  The show marked bassist John Deacon's final full-length concert with Queen (save a short live appearance with Brian May, Roger Taylor and Elton John in 1997).  The profits from the concert were used to launch The Mercury Phoenix Trust, an AIDS charity organisation.

Paul Killick: Paul Killick is a British professional ballroom dancer and an International Latin American Dance Champion.  He appeared in the first two series of the television show "Strictly Come Dancing".  Killick specialises in Latin dance and has won international titles including The World Cup, World Trophy, World Masters, World Series, Universal and British Professional Latin American DanceSport Championships.  Killick is also a choreographer, coach, television personality, dance judge, world-class adjudicator and the owner and director of the Arthur Murray International flagship studio in Beverly Hills.

Katusha Demidova: Katusha Demidova is a Russian professional ballroom dancer and instructor, now residing in the USA.  She is the 2009, 2010, 2011, 2012, 2013 and 2014 Professional World Ballroom Dance Champion, and also the International Professional, and British Open, Ballroom Champion.  Her partner in these events was Arunas Bizokas.  She is the sister of Anna Demidova who is also a dancer.

Nativity 2: Danger in the Manger: Nativity!  2: Danger in the Manger is a 2012 British comedy film written and directed by Debbie Isitt, an improvised Christmas comedy is the second film in the "Nativity" film series.  The film stars David Tennant playing the dual role of twin brothers, with Joanna Page as the wife of one of the brothers and Ian McNeice as the father of the brothers.  Pam Ferris and Marc Wootton reprise their roles from the first film.  The film, which is the official Children in Need film of 2012, had its first public screening on 11 November 2012, when 42 Cineworld cinemas in the UK held one-off charity screenings with all proceeds going to Children in Need.  The film's official premiere was at the Leicester Square Odeon on 14 November.  It went on a wide release on 23 November.

Supporting paragraphs: Strictly Come Dancing (series 9) Pasha Kovalev
Answer: Pavel "Pasha" Kovalev