Question: Maksim "Maks" Aleksandrovich Chmerkovskiy, is a Ukrainian-American Latin–ballroom dance champion, choreographer, and instructor, on which date, Chmerkovskiy, paired with Meryl Elizabeth Davis, an American multi Olympic ice dancer, who won his first "Dancing with the Stars" title?
Context: Melanie LaPatin is a United States Professional Ballroom Dance Champion and world-renowned choreographer, best known for her choreography work on Fox's "So You Think You Can Dance" and ABC's "Dancing With the Stars."  Originally from Brooklyn, New York, LaPatin formed a professional partnership with Tony Meredith in 1981, marrying him in 1989.  Together they traveled the world, competing, coaching, performing, lecturing, choreographing, and represented the United States in twelve Professional World Latin-American Dance Championships, winning over 100 championship titles.  LaPatin eventually moved to back to New York to coach and open a Latin and Ballroom dance studio, Dance Times Square. 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. Sharon Savoy is an American dancer, choreographer and author.  Born and raised in Chicago, Illinois, she began studying dance at the North Carolina School of the Arts at age 15, and later moved to New York City to attend the School of American Ballet until the age of 19.  Savoy danced in several ballet companies and later became a Star Search Dance Champion, Blackpool Champion, World Champion and U.S. Open Champion for her mastery in ballroom dance.  She continues choreography and dance work in various T.V. shows, competitions and movies.  She won the 2013 "World's Best Female Dancer" at the Huading Awards, held in Macau, China. Maksim "Maks" Aleksandrovich Chmerkovskiy (Ukrainian: Максим Олекса́ндрович Чмерковський , Russian: Максим Александрович Чмерковский , ] ; born January 17, 1980) is a Ukrainian-American Latin–ballroom dance champion, choreographer, and instructor.  He is widely known as one of the professional dancers on the American television series "Dancing with the Stars", on which he first appeared in season two.  In his 17 seasons as a competing pro on the show, Chmerkovskiy made it to the final round five times, with two runner-up and two third-place finishes.  Then on May 20, 2014, Chmerkovskiy, paired with Olympic ice dancer Meryl Davis, won his first "Dancing with the Stars" title.  Chmerkovskiy has also starred in the Broadway productions of dance shows "Burn the Floor" and "Forever Tango". Sergei Chislov (alternative spelling: Sergey Chislov, Russian: Сергей Евгеньевич Числов ), born November 4, 1960 in Moscow, USSR, is a 3-time USSR Professional 10-Dance champion, certified International Dance Adjudicator of World Dance Council (WDC), ballroom dance coach, USSR Master of Sport in ballroom dancing, choreographer, and a film actor.  As of 2013, he lives and works in Miami, FL, United States. Elena Grinenko is a professional ballroom dance champion, choreographer, and instructor.  She is best known as one of the professional dancers on the American television series "Dancing With The Stars". Meryl Elizabeth Davis (born January 1, 1987) is an American ice dancer.  With partner Charlie White, she is the 2014 Olympic champion, the 2010 Olympic silver medalist, a two-time (2011, 2013) World champion, five-time Grand Prix Final champion (2009–2013), three-time Four Continents champion (2009, 2011, 2013) and six-time U.S. national champion (2009–2014).  They also won a bronze medal in the team event at the 2014 Winter Olympics. Inna Brayer (born in Moscow, Russia) is a Brooklyn-based amateur ballroom dancer competing in the International 10-Dance division.  She is best known for being the 2007 Amateur USA Dance National 10-Dance Champions with her partner, Pasha Pashkov.  From 1998-1999 Brayer was partnered with fellow Dancing with the Stars co-star Maksim Chmerkovskiy's brother Valentin Chmerkovskiy. 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. Yvonne Marceau is an American ballroom dancer, choreographer, and instructor.  She was born in Chicago, IL, and holds a B.F.A. from the University of Utah as well as an associate degree from the Imperial Society of Ballroom Dance.  In 1984, Marceau co-founded American Ballroom Theater with her dance partner, Pierre Dulaine.  Together, Marceau and Dulaine won numerous ballroom dance contests and were four-time winners of the British Exhibition ballroom competition.  Marceau is the recipient of various awards, including the Astaire Award and the Dance Magazine Award.  Along with Dulaine, Marceau co-founded the Ballroom Theater’s Dancing Classrooms program, which is featured in the documentary Mad Hot Ballroom.  Marceau has been on the faculty at The Juilliard School since 1993 and has taught at the School of American Ballet as well as for numerous New York City social groups, including the Union Club and cotillion societies.  Marceau also currently teaches at the NYU Tisch New Studio on Broadway.
Answer: May 20, 2014