Question: Which Italian choregrapher appeared on Season 12 of Dancing with the Stars?

full_context: Document 1: Dancing with the Stars (U.S. TV series): Dancing with the Stars is an American dance competition television series that premiered on June 1, 2005, on ABC. It is the US version of the UK series "Strictly Come Dancing". The show is hosted by Tom Bergeron, alongside Erin Andrews, who became co-host in season eighteen. Lisa Canning was co-host in the first season, Samantha Harris co-hosted seasons two through nine and Brooke Burke-Charvet in seasons ten through seventeen. On May 12, 2017, it was announced that the series has been renewed for season twenty six.
Document 2: Dancing with the Stars (U.S. season 12): Season twelve of "Dancing with the Stars" premiered on March 21, 2011. Carrie Ann Inaba, Bruno Tonioli, and Len Goodman returned to the show as judges, while Tom Bergeron and Brooke Burke returned as hosts.
Document 3: Dancing with the Stars (U.S. season 18): Season eighteen of "Dancing with the Stars" premiered on March 17, 2014. Len Goodman, Carrie Ann Inaba and Bruno Tonioli returned as judges; Tom Bergeron returned as host while Erin Andrews replaced Brooke Burke-Charvet as co-host. Bandleader Ray Chew replaced the Harold Wheeler orchestra and singers. In addition, the skybox made a return to the show and the judges table returned to the left side of the ballroom.
Document 4: Tony Meredith: Tony Meredith is a professional ballroom dancer, choreographer and United States Professional Latin Champion.
Document 5: Strictly Come Dancing (series 12): Strictly Come Dancing returned for its twelfth series beginning from 7 September 2014 with a launch show, with the live shows starting on 26 and 27 September. Tess Daly returned to present the main show on BBC One alongside Claudia Winkleman, who has been promoted to co-presenter in addition to the results show after Bruce Forsyth decided to leave the show after the eleventh series; however, Forsyth will continue to host the Christmas and Children in Need specials. Zoë Ball returned as presenter of spin-off show "" on BBC Two. Judges Len Goodman, Bruno Tonioli, Craig Revel Horwood and Darcey Bussell also returned.
Document 6: Dancing with the Stars (U.S. season 7): Season seven of "Dancing with the Stars" premiered on September 22, 2008 as a part of ABC's fall 2008 line-up. Instead of 12 couples like previous seasons, this was the first season to showcase a lineup of 13 couples. This season also introduced four new dances: the hustle, the salsa, the jitterbug, and the west coast swing, as well as Team Dancing. Tom Bergeron and Samantha Harris return as the show's hosts. Len Goodman, Bruno Tonioli, and Carrie Ann Inaba continue as the judges this season, with Michael Flatley having appeared temporarily as a guest judge for Len Goodman during week six.
Document 7: Bruno Tonioli: Bruno Tonioli (] ; born 25 November 1955) is an Italian choreographer, dancer, and TV personality.
Document 8: Tony Charmoli: Tony Charmoli (born June 11, 1922) is an American dancer, choreographer, and director. He began dancing on Broadway in such shows as "Make Mine Manhattan" but soon began choreographing for television with "Stop the Music" in 1949. Charmoli then choreographed dance sequences for the popular "Your Hit Parade", winning his first Emmy Award in 1955. He went on to direct and choreograph for some of the biggest stars including Dinah Shore, Lily Tomlin, Danny Kaye, Julie Andrews, Cyd Charisse, Shirley MacLaine, Mitzi Gaynor, and others. On Broadway, Tony choreographed "Ankles Aweigh" (1955) and "Woman of the Year" (1981) with Lauren Bacall.
Document 9: Alex Magno (choreographer): Alexandre (Alex-Andre) Magno is a Brazilian born choreographer and director. His dance styles include hip-hop, jazz, ballet, samba, flamenco, tango, salsa, and martial arts. He has performed with Madonna, Yanni, Britney Spears, the Lido La Tourné, Ballet Hispanico, the Ringling Brothers Circus, and the Academy Awards. He also works with his own dance company, “Personna Dance Theatre".
Document 10: Strictly Come Dancing (series 11): Strictly Come Dancing returned for its eleventh series beginning with a launch show on 7 September 2013, with the live shows starting on 27 and 28 September 2013. Bruce Forsyth and Tess Daly continued to co-present the main show on BBC One, with Claudia Winkleman returning to present the results show alongside Daly. Zoë Ball returned as presenter of "" on BBC Two. Len Goodman, Bruno Tonioli, Craig Revel Horwood and Darcey Bussell also returned as judges.
Document 11: Dancing with the Stars (U.S. season 17): Season seventeen of "Dancing with the Stars" premiered on September 16, 2013 and ended on November 26, 2013. Tom Bergeron and Brooke Burke Charvet returned as hosts and Carrie Ann Inaba, Len Goodman, and Bruno Tonioli returned as judges. The Harold Wheeler orchestra and singers also returned to provide the music throughout the season (which turned out to be their last). This was also Brooke Burke-Charvet's last season as co-host. The cast was announced on September 4, 2013, during "Good Morning America".
Document 12: Dancing on Ice around the world: Dancing on Ice is a British made dance competition television series franchise produced around the world. The format, devised by London Weekend Television and Granada Television for ITV, has been a prime-time hit in eight different countries, including Britain and subsequently in Italy and Chile. In Australia, where it was titled "Torvill and Dean's Dancing on Ice", it was axed after just one series owing to production costs.
Document 13: Len Goodman: Leonard Gordon Goodman (born 25 April 1944) is an English professional ballroom dancer, dance judge, and coach.
Document 14: Roberto Bolle: Roberto Bolle (Casale Monferrato, March 26, 1975) is an Italian danseur. He is currently a "principal dancer" with the American Ballet Theatre and a principal dancer "étoile" at La Scala Theatre Ballet. Bolle also dances regularly as a guest artist with the world’s leading companies, including The Royal Ballet, the Mariinsky Ballet, the Bolshoi Ballet and the Paris Opera Ballet.
Document 15: Carrie Ann Inaba: Carrie Ann Inaba (born January 5, 1968) is an American dancer, choreographer, television dance competition judge, actress, game show host, and singer. She is best known for her work on ABC TV's "Dancing with the Stars".
ground_truth: Bruno Tonioli