Question: Riccardo Cocchi is a six-time Latin Dance Champion with his partner, born when?

Context paragraphs:
Valentin Chmerkovskiy: Valentin Aleksandrovich "Val" Chmerkovskiy (Ukrainian: Валентин Олекса́ндрович Чмерковський ; born March 24, 1986) is a Ukrainian-American professional dancer, best known for his appearances on the U.S. version of "Dancing with the Stars", which he won twice.  Chmerkovskiy is a two-time World Latin Dance Champion (Junior and Youth) and a 14-time U.S. National Latin Dance champion.

Yulia Zagoruychenko: Yulia Zagoruychenko (born September 11, 1981) is the current World Latin Dance Champion, with her partner, Riccardo Cocchi.

Riccardo Cocchi: Riccardo Cocchi (born December 7, 1977, Terni, Italy) is a six-time Latin Dance Champion, with his partner, Yulia Zagoruychenko.  Currently, he resides in and represents the United States of America.  When not busy competing, Riccardo is available for coaching.

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.

Giovanni Pernice: Giovanni Pernice (born 5 September 1990) is an Italian dancer and choreographer, best known as a professional dancer on the BBC One dance series "Strictly Come Dancing".  Pernice is the Italian Open Latin Dance Champion (2012) and is the current Guinness World Record holder for Jive Kicks and Flicks.

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.

Walter Laird: Walter William Laird (26 July 1920 – 30 May 2002) was a major influence in the development of Latin American dancing in Britain after the Second World War.  He was World Professional Latin Dance Champion three times.  He coached many successful dancers including Allan Tornsberg, Vibeke Toft, Espen Salberg, Jukka Haapalainen, Sirpa Suutari and Donnie Burns, Peter Maxwell & Lynn Harman were amongst his first major champions and a couple on which much of his ultimate technique was developed.  Laird was a Fellow and Examiner of the IDTA, and until 2000, he was Secretary (and later President) of the Ballroom Dancers' Federation.

Taniec z Gwiazdami (season 14): The 14th season of "Taniec z Gwiazdami", the Polish edition of "Dancing With the Stars", started on March 7, 2014.  Unlike the previous thirteen seasons, this one was aired on Polsat TV network.  It was hosted by Krzysztof Ibisz and Anna Głogowska, season 13 professional champion.  Beata Tyszkiewicz and Iwona Pavlović returned as judges, joined by a ballroom dancer and former World Latin Dance Champion Michał Malitowski as well as an actor Andrzej Grabowski.

Bryan Watson (dancer): Bryan Watson (born 18 April 1969) was nine times Professional World Latin Dance Champion.  He also won the International Latin American Championship five times.

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.

Supporting paragraphs: Riccardo Cocchi Yulia Zagoruychenko
Answer: September 11, 1981