Question: The front man for the band The Ballas Hough Band was born in what year?

full_context: Document 1: Kabalas: The Kabalas were a four-piece band out of the Quad Cities area of the American Mid-West whose musical foundations were based firmly in a traditional Eastern European Klezmer style that mixed in Jewish folksongs, Israeli popular songs, Polka and popular music. The members of the band were Scott Morschhauser (vocals, accordion, guitar, percussion); Barry "The Wolfman" Wolf (accordion); "Nervous" Neal Smith (saxophones, backup vocals, flute, clarinet); and the late "Mr." Joel Dick (drums, percussion). On stage, their performance was a blend of vaudeville antics and great musicianship. Their traditional closing song was "Hey Lordy Mambo" where the drummer would play with four sticks and set them on fire.
Document 2: Lacey Schwimmer: Lacey Mae Schwimmer (born June 28, 1988) is an American ballroom dancer and singer. She is best known as a fourth place finalist of the third season of "So You Think You Can Dance". She is the daughter of noted dancer Buddy Schwimmer, as well as the cousin of Heidi Groskreutz, who placed fourth on the second season of "So You Think You Can Dance" and younger sister of Benji Schwimmer, the winner of the show's second season. She participated in the seventh season of "Dancing with the Stars" as a professional dancer paired with Lance Bass of 'N Sync, in the eighth season of the show paired with "Jackass" star Steve-O and in the ninth season paired with actor and Iron Chef America host Mark Dacascos. Schwimmer returned to "Dancing with the Stars" for its eleventh season and she was partnered with Disney Channel star Kyle Massey and in the 12th season, paired with radio host Mike Catherwood. In the thirteenth season, she was paired with transgender activist Chaz Bono. Schwimmer did not return for season 14 of "Dancing With The Stars'.
Document 3: Mark Ballas: Mark Alexander Ballas Jr. (born May 24, 1986) is an American dancer, choreographer, singer-songwriter, musician, and actor.
Document 4: 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 5: Yvonne Marceau: 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.
Document 6: 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 7: Hall &amp; Oates: Daryl Hall and John Oates, often referred to as Hall & Oates, are an American musical duo from Philadelphia. Daryl Hall is generally the lead vocalist of the pairing. John Oates primarily plays electric guitar and provides backing vocals. The two write most of the songs they perform, either separately or in collaboration. They achieved their greatest fame from the late 1970s to the mid-1980s with a fusion of rock and roll and rhythm and blues.
Document 8: Doug Haining: Doug Haining is a saxophonist/clarinetist who currently resides in Edina, Minnesota. He is a music graduate of St. Olaf College in Northfield, Minnesota, where he studied classical clarinet. He has performed professionally since 1974, backing national artists such as Steve Allen, Don Rickles, Bob Hope, and others, and Broadway shows such as West Side Story, Cats, A Chorus Line and many others. He has performed with the Minnesota Orchestra and St. Paul Chamber Orchestra. Doug also played short stints with Red Wolfe’s ‘Ellington Echoes’, and the Hall Brothers. Since 1979, Doug has been a member of the Wolverines Classic Jazz Orchestra. He is also a member of the recently formed BellaGala big band, and plays in other jazz groups in the area. Doug founded the Twin Cities Seven in 1999, and since then has been busy writing arrangements and compositions for the band's ever-growing library. Doug has performed with the band at many local venues and jazz festivals, and several regional performing venues outside the metro area. In 2010, Doug co-founded the Explosion Big Band with his musical cohort Scott Agster. In his spare time, he teaches privately and co-leads the Edina High School Jazz Ensemble I. He has two children, Trevor and Preston, both of whom are currently pursuing professional music careers.
Document 9: Ballas Hough Band: The Ballas Hough Band was an American pop rock band fronted by Mark Ballas and Derek Hough, both of whom play lead guitar and sing lead vocals. The band's other members are Sam Marder (bass guitar), Harry Sullivan (drums) and Emily Grace (keyboards, background vocals). Both Ballas and Hough are "Dancing with the Stars" champions.
Document 10: Dancer, Texas Pop. 81: Dancer, Texas Pop. 81 is a 1998 comedy-drama film starring Breckin Meyer, Peter Facinelli, Eddie Mills, and Ethan Embry.
Document 11: Lil Buck: Charles "Lil Buck" Riley (born May 25, 1988) is a Los Angeles-based dancer and occasional model from Memphis, Tennessee who specializes in a style of street dance called jookin. He gained popularity after director Spike Jonze used his cell phone to record an interpretive performance of "The Dying Swan" by Lil Buck and Yo-Yo Ma. Jonze uploaded the video to YouTube and as of November 2015, it had amassed over three million views.
Document 12: List of Heart band members: Heart is an American rock band that first found success in Canada and later in the United States and worldwide. Over the group's four-decade history it has had three primary lineups, with the constant center of the group since 1974 being sisters Ann Wilson (lead singer) and Nancy Wilson (guitarist). While it has been referred to as a duo because of the focus on leaders Ann and Nancy Wilson, Heart is a full rock group. In its original lineup the band had six members, then five in its second incarnation, and is again at six currently.
Document 13: Darius Rucker: Darius Carlos Rucker (born May 13, 1966) is an American singer and songwriter. He first gained fame as the lead vocalist and rhythm guitarist of the Grammy Award-winning American rock band Hootie & the Blowfish, which he founded in 1986 at the University of South Carolina along with Mark Bryan, Jim "Soni" Sonefeld and Dean Felber. The band has released five studio albums with him as a member, and charted six top 40 hits on the "Billboard" Hot 100. Rucker co-wrote the majority of the band's songs with the other three members.
Document 14: Julianne Hough: Julianne Alexandra Hough ( ; born July 20, 1988) is an American dancer, singer, and actress. She is a two-time professional champion of ABC's "Dancing with the Stars". She was nominated for a Creative Arts Primetime Emmy in 2007 for Outstanding Choreography in season five of the show. Her first leading acting role was in the 2011 film remake of "Footloose". In September 2014, Hough joined "Dancing with the Stars" as a permanent fourth judge. Along with her brother Derek Hough (who is a six-time winner of the dancing show) and Tessandra Chavez, she won the Primetime Emmy Award for Outstanding Choreography in 2015. In 2016, she played Sandy in the live Fox television production of "".
Document 15: BHB (album): BHB is the debut and only album from pop music group Ballas Hough Band formed by Dancing with the Stars professional dancers Derek Hough and Mark Ballas. The album was released on March 10, 2009 via Hollywood Records.
ground_truth: 1986