Problem: Background: Destiny's Child was an American girl group whose final and best-known line-up comprised Beyonce Knowles, Kelly Rowland, and Michelle Williams. Formed in 1997 in Houston, Texas, Destiny's Child members began their musical career as Girl's Tyme, formed in 1990, comprising Knowles, Rowland, LaTavia Roberson, and LeToya Luckett among others. After years of limited success, the quartet were signed in 1997 to Columbia Records and Music World Entertainment as Destiny's Child. Destiny's Child was launched into mainstream recognition following the release of their best-selling second album, The Writing's on the Wall (1999), which contained the number-one singles "Bills, Bills, Bills" and "Say My Name".
Context: Destiny's Child reunited for a farewell performance at the 2006 NBA All-Star Game on February 19, 2006 in Houston, Texas; however, Knowles commented, "It's the last album, but it's not the last show." Their final televised performance was at the Fashion Rocks benefit concert in New York a few days later. On March 28, 2006, Destiny's Child was inducted into the Hollywood Walk of Fame, the 2,035th recipient of the coveted recognition. At the 2006 BET Awards, Destiny's Child won Best Group, a category they also earned in 2005 and 2001.  After their formal disbandment, all members resumed their solo careers and have each experienced different levels of success. Since then, Knowles, Rowland and Williams have continued to collaborate on each other's solo projects through song features, music video appearances, and live performances. Both Rowland and Williams, along with Knowles' sister Solange, appeared in Knowles' music video for her single "Get Me Bodied" (2007). On June 26, 2007, the group made a mini-reunion at the 2007 BET Awards, where Knowles performed "Get Me Bodied" with Williams and Solange as her back-up dancers. After her performance, Knowles introduced Rowland who performed her single "Like This" (2007) with Eve. On the September 2, 2007 Los Angeles stop of The Beyonce Experience tour, Knowles sang a snippet of "Survivor" with Rowland and Williams, and the latter two rendered a "Happy Birthday" song to Knowles. The performance was featured in Knowles' tour DVD, The Beyonce Experience Live. In 2008, Knowles recorded a cover of Billy Joel's "Honesty" for Destiny's Child's compilation album Mathew Knowles & Music World Present Vol.1: Love Destiny, which was released only in Japan to celebrate the group's tenth anniversary.  Rowland made a cameo appearance in Knowles' music video for her single "Party" (2011), and the group's third compilation album, Playlist: The Very Best of Destiny's Child, was released in 2012 to mark the fifteenth anniversary since their formation. The fourth compilation album, Love Songs, was released on January 29, 2013, and included the newly recorded song "Nuclear", produced by Pharrell Williams. "Nuclear" marked the first original music from Destiny's Child in eight years. The following month, Rowland and Williams appeared as special guests for Knowles' Super Bowl XLVII halftime show, where they performed "Bootylicious", "Independent Women" and Knowles' own song "Single Ladies (Put a Ring on It)". A video album titled Destiny's Child Video Anthology was released in May 2013 and featured sixteen of the group's music videos. Knowles and Williams were then featured on Rowland's song "You Changed" from her fourth solo album Talk a Good Game (2013). Later that year, Rowland and Williams made cameo appearances in the music videos for Knowles' songs "Superpower" and "Grown Woman", which were both included on her self-titled fifth solo visual album. Williams released the single "Say Yes" in June 2014, featuring Knowles and Rowland. They performed "Say Yes" together during the 2015 Stellar Awards, and the live version of the song was mastered for iTunes in April 2015. On November 7, 2016, the group reunited in a video to try the Mannequin Challenge, which was posted on Rowland's official Instagram account.
Question: What did Knowles do after?
Answer: Knowles' Super Bowl XLVII halftime show, where they performed "Bootylicious", "Independent Women" and Knowles' own song "Single Ladies (Put a Ring on It)".

Background: Kara (Hangul: kara, Japanese: kara, often stylized as KARA) was a South Korean pop girl group formed by DSP Media in 2007. The group's final lineup was composed of Park Gyuri, Han Seungyeon, Goo Hara and Heo Youngji. Members Nicole Jung and Kang Ji-young officially departed from the group in 2014, while Kim Sung-hee left in 2008. The group's name comes from the Greek word "chara" (khara, lit. "joy"), which they interpreted to mean "sweet melody".
Context: The group was scheduled to have their comeback in March 2008 with their second album, however, member Kim Sung-hee suddenly announced that she would be leaving the group due to parental pressure because her participation in the group was contingent on the maintenance of her grades. In response, DSP stated that the second album that was recorded would be shelved and replaced by a mini-album to come in May; in addition, two members would join the group. Auditions were held, and the two new members were eventually revealed to be Goo Ha-ra and Kang Jiyoung. The group made their return in the music industry as a quintet on July 24, 2008 with "Rock U" on M! Countdown. They made their comeback with the "cute" and "playful" image which was the complete opposite of the group's original image from their debut. In the same month, their first mini-album titled Rock U was also released. The second season of Kara Self Camera was premiered on August 18, 2008, which chronicled how the group was adapting to their two new members.  On November 29, 2008, DSP released a teaser video for their upcoming single, "Pretty Girl", which received over 40,000 hits within 12 hours. The full video was released on December 2, 2008 online and was positively received by the public. The EP, Pretty Girl, was released on December 4, embodying a "fun-party" concept. The group began its comeback on all major music shows on December 4, 2008, starting with M! Countdown. During their first national performance on KBS's Music Bank, member Goo Hara accidentally gasped "ah!" live on air due to slipping on falling confetti, and reportedly cried profusely afterwards. The incident became a hot issue to many viewers, but Goo Hara received comfort instead of criticism from the general public.  Park Gyuri attributed their popularity increase to their "pretty but natural" appeal, while media reports gave credit to the band for finally finding its own identity in the music industry since the group's debut and to older male fans, most notably singer Shin Hae Chul. Due to their increasingly hectic schedule as their popularity rose, a few of the group's members were taken to the hospital on December 19 after a Music Bank rehearsal for cold symptoms and exhaustion.
Question: What is "Rock U"
Answer:
The group made their return in the music industry as a quintet on July 24, 2008 with "Rock U" on M! Countdown.