Some context: En Vogue is an American R&B/Pop vocal group whose original lineup consisted of singers Terry Ellis, Dawn Robinson, Cindy Herron, and Maxine Jones. Formed in Oakland, California in 1988, En Vogue reached number two on the US Hot 100 with the single "Hold On", which was taken from their 1990 debut album Born To Sing. The group's 1992 follow-up album Funky Divas reached the top 10 in both the US and UK, and included their second US number two hit "My Lovin' (You're Never Gonna Get It)", plus the US top 10 hits "
In 1995, En Vogue was amongst numerous African-American female vocalists featured on the song "Freedom" for the soundtrack to Mario Van Peebles' drama film Panther (1995). Also in 1995, while band members Cindy Herron and Maxine Jones went on maternity leave, Ellis recorded and released a solo album entitled Southern Gal, which spun off the top ten R&B single "Where Ever You Are." The same year, the band also made a cameo appearance in Joel Schumachers superhero film Batman Forever. In 1996, En Vogue recorded "Don't Let Go (Love)" for the soundtrack to the motion picture Set It Off, directed by F. Gary Gray. Released as the soundtrack's lead single in the fall 1996, it became the group's biggest hit yet, selling over 1.8 million copies worldwide and becoming certified platinum by the RIAA. In response to the large commercial success of "Don't Let Go (Love)," the group steadfastly went to work on their third studio album. As the album was nearing completion, Robinson chose to leave the group in April 1997 after difficult contractual negotiations reached a stalemate. Despite Robinson's abrupt departure, Ellis, Herron, and Jones resolved to continue on as a trio.  Robinson's abrupt departure from En Vogue forced the remaining trio to re-record several of her original lead vocals on their forthcoming album EV3, which was released in June 1997. A breakaway from previous projects, it marked En Vogue's first project to include a diverse roster of collaborators including credits from Babyface, David Foster, Diane Warren, Andrea Martin, and Ivan Matias along with regular contributors Foster & McElroy. Upon its release, EV3 received mixed reviews from critics, many of whom praised the band's vocal performances but were critical with overall production of the album. In the US, it reached the top ten in Germany, Switzerland, and the United Kingdom and debuted at number eight on both Billboard's Top R&B/Hip-Hop Albums chart and the Billboard 200 with sales of 76,500 units, the band's highest first-week numbers. Two further singles released from the album, "Whatever" and "Too Gone, Too Long", entered the top twenty and top forty the Billboard Hot 100, respectively.  In 1998, En Vogue recorded the song "No Fool No More" for the soundtrack to Gregory Nava's romantic drama film Why Do Fools Fall In Love (1998). A top forty entry on the New Zealand Singles Chart, it was later included on the band's first compilation album Best of En Vogue, released in June 1999. A moderate success, the album reached the top forty in Austria and the United Kingdom.
Why did Robinson Leave?
A: Robinson chose to leave the group in April 1997 after difficult contractual negotiations reached a stalemate.

Some context: Vitali Volodymyrovych Klitschko (; Ukrainian: Vitalii Volodimirovich Klichko, [vi'taljij klItS'ko]; born 19 July 1971) is a Ukrainian politician and former professional boxer. He currently serves as Mayor of Kiev and head of the Kiev City State Administration, having held both offices since June 2014. Klitschko is a former leader of the Petro Poroshenko Bloc and a former Member of the Ukrainian Parliament. He became actively involved in Ukrainian politics in 2005 and combined this with his professional boxing career until his retirement from the sport in 2013.
On 21 March 2009, Klitschko defeated Juan Carlos Gomez by TKO in the ninth round. Gomez tried to use his movement to thwart Vitali, but seemed unable to cope with the power and physical strength of his opponent. As the rounds progressed, Klitschko began imposing himself on Gomez more and more. Gomez soon became wary of Klitschko's power and also began to tire physically. By the sixth round, Vitali was in total control. The end came when the referee stopped the fight in the ninth round as Gomez appeared unable to withstand any more hits.  On 26 September, Klitschko earned a one-sided TKO victory over Chris Arreola at the Staples Center in Los Angeles when Arreola's trainer, Henry Ramirez, asked the referee to stop the fight. Arreola was considered at the time one of the division's hardest punchers; however, Klitschko kept Arreola at bay with his left jab and hit him almost at will with his right. Arreola had been influenced by Samuel Peter's defeat to Klitschko in 2008, in which Peter had tried to box from the outside. He therefore employed a game-plan which involved applying constant pressure to Vitali in order to force him into a high tempo fight. Despite his best efforts, the bout became one sided very quickly. Klitschko consistently proved himself faster, sharper and much fitter than Arreola.  On 12 December, Vitali defeated Kevin Johnson by unanimous decision, winning almost every round. Johnson, a skillful fighter, tried to negate Klitschko's strength with angles and head movement. Though he proved hard to hit, he failed to launch any sustained attack of his own. After the Johnson bout, Klitschko's camp began negotiations for a potential fight with former WBA Champion Nikolai Valuev, but the match failed to materialize due to economic disagreements.
What was the result of that fight?
A:
On 21 March 2009, Klitschko defeated Juan Carlos Gomez by TKO in the ninth round.