Question: What nationality is the lady who, with Sergei Dudakov coaches Yakau Zenko ?

Context paragraphs:
Oleg Yashchuk: Oleg Yashchuk (Ukrainian: Олег Ростиславович Ящук , born 26 October 1977 in (Hrynky Rural-rada), Lanivtsi Raion, Ternopil Oblast then Ukrainian SSR) is a Ukrainian professional footballer.  He ended his career as a striker for BX Brussels and also holds the Belgian nationality.  His last name is sometimes transliterated as Iachtchouk or Jasjtsjoek.  He now coaches the U14 division of R.S.C. Anderlecht.

Ilie Daniel Popescu: Ilie Daniel Popescu (born June 1, 1983 in Reşita, Romania) was a Romanian born artistic gymnast.  He is an Olympic Team bronze medallist (2004), a world silver medalist (2007/ vault) and a European bronze medalist (2008/ Pommel Horse).  He changed his nationality to German.  He coaches several teams of the German gymnastics club TV Schwäbisch Gmünd Wetzgau, for which he also starts in the German Gymnastics League.

PLK Best Polish Player: The PLK Best Polish Player award is an annual award in the Polish PLK that is given to the best player with a Polish nationality.  Players, coaches and press members vote for the winner of the award.

All-star game: An all-star game is an exhibition game that purports to showcase the best players (the "stars") of a sports league.  The exhibition is between two teams organized solely for the event, usually representing the league's teams based on region or division, but sometimes dividing the players by an attribute such as nationality.  Selection of the players may be done by a vote of the coaches and/or news media; in professional leagues, fans may vote on some or all of the roster.  An all-star game usually occurs at the midpoint of the regular season.  An exception is American football's Pro Bowl, which occurs at the end of the season.

Eteri Tutberidze: Eteri Georgievna Tutberidze (Russian: Этери Георгиевна Тутберидзе ; born 24 February 1974) is a Russian figure skating coach.  She coaches ladies' and men's singles.

WBCA National Coach of the Year Award: The United States Marine Corps/WBCA National Coach of the Year is an award given by the Women's Basketball Coaches Association to best women's basketball Head Coaches in college and high schools since 1983.  From 2014, the award is named "The Pat Summitt Trophy" in honor of the legendary University of Tennessee Lady Vols head coach.  The WBCA presents an award to the National Coach of the year in each of six divisions:

Sergei Gurchenkov: Sergei Sergeyevich Gurchenkov (Russian: Серге́й Серге́евич Гурченков ; born May 1, 1983 in Moscow) is a retired Russian professional footballer.  As of May 2009, he coaches youth teams of FC Spartak Moscow.  He made his professional debut in the Russian Second Division in 1999 for FC Spartak-2 Moscow.

Sergei Dudakov: Sergei Viktorovich Dudakov (Russian: Сергей Викторович Дудаков ; born 13 January 1970) is a Russian figure skating coach and former competitor who represented the Soviet Union.  He is the 1989 Golden Spin of Zagreb champion and a two-time (1989–90) Piruetten champion.  He finished 7th at the 1987 World Junior Championships.  He was coached by Viktor Kudriavtsev in Moscow.

Sergei Zamorski: Sergei Zamorski (born 22 January 1971) is a retired footballer from Estonia, who also holds the Russian nationality.  He retired in 2004.  His last club was JK Trans Narva.

Yakau Zenko: Yakau Zenko (born 21 July 2000) is a Belarusian figure skater.  In the 2015–16 season, he became the Belarusian national senior bronze medalist and junior champion.  He was selected to compete at the 2016 World Junior Championships in Debrecen.  In Hungary, Zenko qualified for the final segment by placing 22nd in the short program.  His 15th place in the free skate lifted him to 17th overall.  He trains in Moscow, Russia.  Formerly a student of Julia Soldatova at Moskvich, he is now coached by Eteri Tutberidze and Sergei Dudakov at Sambo 70.

Supporting paragraphs: Yakau Zenko Eteri Tutberidze
Answer: Russian