Question: When did the singer-songwriter of Forever Your Girl quit as a judge?

full_context: Document 1: American Idol: The fourteenth season premiered on January 7, 2015. Ryan Seacrest returned to host, while Jennifer Lopez, Keith Urban and Harry Connick, Jr. returned for their respective fourth, third and second seasons as judges. Eighth season runner-up Adam Lambert filled in for Urban during the New York City auditions. Randy Jackson did not return as the in-house mentor for this season.
Document 2: Madonna (entertainer): Madonna holds the record for the most number-ones on all combined Billboard charts, including twelve number-one songs on the Billboard Hot 100 and eight number-one albums on the Billboard 200. With 45 songs topping the Hot Dance Club Songs chart, Madonna became the artist with the most number-one songs on an active Billboard chart, pulling ahead of George Strait with 44 number-one songs on the Hot Country Songs chart. She has also scored 38 top-ten singles on the Hot 100, more than any other artist in history. In 2008, Billboard magazine ranked her at number two, behind The Beatles, on the Billboard Hot 100 All-Time Top Artists, making her the most successful solo artist in the history of American singles chart.
Document 3: American Idol: The show had originally planned on having four judges following the Pop Idol format; however, only three judges had been found by the time of the audition round in the first season, namely Randy Jackson, Paula Abdul and Simon Cowell. A fourth judge, radio DJ Stryker, was originally chosen but he dropped out citing "image concerns". In the second season, New York radio personality Angie Martinez had been hired as a fourth judge but withdrew only after a few days of auditions due to not being comfortable with giving out criticism. The show decided to continue with the three judges format until season eight. All three original judges stayed on the judging panel for eight seasons.
Document 4: I'm Every Woman: "I'm Every Woman" is the debut solo single by American singer Chaka Khan from her debut solo studio album "Chaka" (1978). It was Khan's first hit outside her recordings with the funk band Rufus. "I'm Every Woman" was produced by Arif Mardin and written by the successful songwriting team Nickolas Ashford and Valerie Simpson. The single established Chaka's career outside the group Rufus, whom she would leave after their eighth studio album "Masterjam" was released in late 1979.
Document 5: American Idol: In season eight, Latin Grammy Award-nominated singer–songwriter and record producer Kara DioGuardi was added as a fourth judge. She stayed for two seasons and left the show before season ten. Paula Abdul left the show before season nine after failing to agree terms with the show producers. Emmy Award-winning talk show host Ellen DeGeneres replaced Paula Abdul for that season, but left after just one season. On January 11, 2010, Simon Cowell announced that he was leaving the show to pursue introducing the American version of his show The X Factor to the USA for 2011. Jennifer Lopez and Steven Tyler joined the judging panel in season ten, but both left after two seasons. They were replaced by three new judges, Mariah Carey, Nicki Minaj and Keith Urban, who joined Randy Jackson in season 12. However both Carey and Minaj left after one season, and Randy Jackson also announced that he would depart the show after twelve seasons as a judge but would return as a mentor. Urban is the only judge from season 12 to return in season 13. He was joined by previous judge Jennifer Lopez and former mentor Harry Connick, Jr.. Lopez, Urban and Connick, Jr. all returned as judges for the show's fourteenth and fifteenth seasons.
Document 6: Opposites Attract: "Opposites Attract" is a song recorded by Paula Abdul, featured on her debut album "Forever Your Girl". It was written and produced by Oliver Leiber. Vocals on the song, in addition to Abdul, were provided by Bruce DeShazer and Marv Gunn, also known as The Wild Pair. "Opposites Attract" was the sixth and final single from the album, and achieved success in many countries, including the United States, Canada and Australia, where it was a number-one hit.
Document 7: Whitney Houston: Houston is the only artist to chart seven consecutive No. 1 Billboard Hot 100 songs. She is the second artist behind Elton John and the only woman to have two number - one Billboard 200 Album awards (formerly ``Top Pop Albums '') on the Billboard magazine year - end charts. Houston's self - titled debut album (1985) became the best - selling debut album by a woman in history. Rolling Stone named it the best album of 1986, and ranked it at number 254 on the magazine's list of the 500 Greatest Albums of All Time. Her second studio album, Whitney (1987), became the first album by a woman to debut at number one on the Billboard 200 albums chart.
Document 8: American Idol: The thirteenth season premiered on January 15, 2014, with Ryan Seacrest returning as host. Randy Jackson and Keith Urban returned, though Jackson moved from the judging panel to the role of in-mentor. Mariah Carey and Nicki Minaj left the panel after one season. Former judge Jennifer Lopez and former mentor Harry Connick, Jr. joined Urban on the panel. Also, Nigel Lythgoe and Ken Warwick were replaced as executive producers by Per Blankens, Jesse Ignjatovic and Evan Pragger. Bill DeRonde replaced Warwick as a director of the audition episodes, while Louis J. Horvitz replaced Gregg Gelfand as a director of the show.
Document 9: List of UK Singles Chart number ones of the 1980s: American entertainer Madonna was the most successful act of the decade in terms of number - one singles. She had six number ones: ``Into the Groove ''(1985);`` Papa Do n't Preach'', ``True Blue ''(both 1986);`` La Isla Bonita'', ``Who's That Girl ''(both 1987); and`` Like a Prayer'' (1989). George Michael had significant involvement with seven number - one singles; he was also involved with Band Aid single ``Do They Know It's Christmas? ''but his contribution was less significant. He had two number - one singles as a solo artist, four as a member of pop duo Wham!, and one as a duet with Aretha Franklin. The following artists achieved three or more number - one hits during the 1980s.
Document 10: American Idol: Towards the end of the season, Randy Jackson, the last remaining of the original judges, announced that he would no longer serve as a judge to pursue other business ventures. Both judges Mariah Carey and Nicki Minaj also decided to leave after one season to focus on their music careers.
Document 11: Forever Your Girl: Forever Your Girl is the debut studio album by American singer Paula Abdul. It was released on June 21, 1988 through Virgin Records. The album was Abdul's breakthrough into the music industry after being a choreographer for high-profile artists including George Michael, ZZ Top, Duran Duran and most notably Janet Jackson. At the time of the album's release it was the most successful debut album of all time and was the first time an artist scored four US "Billboard" Hot 100 number-one singles from a debut album.
Document 12: American Idol: Season 12 premiered on January 16, 2013. Judges Jennifer Lopez and Steven Tyler left the show after two seasons. This season's judging panel consisted of Randy Jackson, along with Mariah Carey, Keith Urban and Nicki Minaj. This was the first season since season nine to have four judges on the panel. The pre-season buzz and the early episodes of the show were dominated by the feud between the judges Minaj and Carey after a video of their dispute was leaked to TMZ.
Document 13: American Idol: American Idol employs a panel of judges who critique the contestants' performances. The original judges were record producer and music manager Randy Jackson, pop singer and choreographer Paula Abdul and music executive and manager Simon Cowell. The judging panel for the most recent season consisted of country singer Keith Urban, singer and actress Jennifer Lopez, and jazz singer Harry Connick, Jr. The show was originally hosted by radio personality Ryan Seacrest and comedian Brian Dunkleman, with Seacrest continuing on for the rest of the seasons.
Document 14: Carly Simon: After a brief stint with her sister Lucy Simon as duo group the Simon Sisters, she found great success as a solo artist with her 1971 self-titled debut album "Carly Simon", which won her the Grammy Award for Best New Artist, and spawned her first Top 10 single "That's the Way I've Always Heard It Should Be". She achieved international fame with her third album "No Secrets" which sat firmly at No. 1 on the "Billboard" 200 for five weeks and spawned the worldwide hit "You're So Vain", for which she received three Grammy nominations, including Record of the Year and Song of the Year. With her 1988 hit "Let the River Run", from the film "Working Girl", she became the first artist to win a Grammy Award, an Academy Award, and a Golden Globe Award for a song composed and written, as well as performed, entirely by a single artist.
Document 15: I'm Just Here for the Music: "I'm Just Here for the Music" is a song by American singer Paula Abdul. The single followed Abdul's 2008 comeback "Dance Like There's No Tomorrow", and was released on May 8, 2009 by Filament Entertainment Group, a label distributed by Caroline Distribution. The track was produced by Oliver Leiber, who helped to create Paula's debut album "Forever Your Girl". The song sampled Indeep's 1982 single "Last Night a D.J. Saved My Life".
ground_truth: before season nine
sub_queries: Which singer-songwriter is Forever Your Girl the fifth studio album of? Answer: Paula Abdul
When did Paula Abdul quit as a judge? Answer: before season nine