Task: Question Answering
Input (English): Context: Number Ones is a compilation album of recordings by Swedish pop group ABBA , released by Polar Music in 2006 . Whereas ABBA Gold had pulled together 19 of the group 's biggest hits and most familiar songs , Number Ones was a variation on this concept , collecting 18 tracks that were # 1 hits in many of the countries where ABBA were successful . In the end , only three tracks from ABBA Gold did not make the cut : `` Does Your Mother Know '' , `` Lay All Your Love on Me '' , and `` Thank You for the Music '' . In the UK , the track list included the full length version of `` Summer Night City '' ( originally released on the Thank You for the Music box set ) and an additional track `` Ring Ring '' , oddly never a big hit in that territory . A limited edition , also released in the UK , included a bonus disc with 12 tracks from ABBA 's # 1 albums . In Taiwan , a hidden track follows `` I Have a Dream '' . This hidden track , titled `` ABBA Remix '' and running for 3:31 , is a medley of the choruses of the 18 songs on the CD ., Anni-Frid Synni, Princess Reuss of Plauen (born Anni-Frid Synni Lyngstad,  15 November 1945), widely known as Frida Lyngstad or by just the mononym Frida, is a Swedish pop and jazz singer. Born in Norway to a Norwegian mother and a German father, she grew up in Sweden and reached international stardom as a member of the pop group ABBA, which has sold over 380 million albums and singles worldwide, making them one of the best-selling music artists in history. After the break-up of ABBA, she continued an international solo singing career with mixed success. In 1996, Frida recorded her final album before 'retiring' from music. She now focuses on environmental issues.
In April 1964, aged 18 she married Ragnar Fredriksson. Immediately after their divorce in 1970, Lyngstad courted eventual ABBA band member Benny Andersson, co-habiting until they officially married in 1978. The couple separated in 1980 and divorced in 1981. In 1992, Lyngstad married Heinrich Ruzzo, Prince Reuss of Plauen, who was a German Prince of the former sovereign House of Reuss. The prince died of lymphoma in October 1999. Lyngstad currently lives in Zermatt, Switzerland, sharing a home with her British boyfriend, Henry Smith, 5th Viscount Hambleden, since 2008., The Eurovision Song Contest, sometimes popularly called Eurovision but not to be confused with the Eurovision network that broadcasts it, is the longest-running annual international TV song competition, held, primarily, among the member countries of the European Broadcasting Union (EBU) since 1956. The competition was based upon the existing Sanremo Music Festival held in Italy since 1951., Polar Music is a Swedish record company founded in 1963 by Stig Anderson and his friend Bengt Bernhag. The first act that it signed was the Hootenanny Singers featuring Björn Ulvaeus. Polar eventually gained prosperity producing Ulvaeus' next group, international superstars ABBA. As a small Scandinavian company based in Sweden, Polar could not afford to set up operations worldwide and were only ABBA's record company in the Scandinavian countries. Therefore, ABBA's recordings were licensed to different record companies in each country, but usually to companies that had international operations, meaning they could effectively compete with each other to acquire the licenses in more countries if they proved successful in their own. The licenses gave the companies a few allowances to issue certain tracks as singles that Polar had not, or to modify single (and occasionally album) artwork. The licenses were for three years at a time, meaning that between 1989 and 1992, they had all expired. This enabled PolyGram to release "" to major success around the world., Göran Bror Benny Andersson (born 16 December 1946) is a Swedish musician, composer, member of the Swedish music group ABBA (19721982), and co-composer of the musicals "Chess", "Kristina från Duvemåla", and "Mamma Mia!". For the 2008 film version of "Mamma Mia!", he worked also as an executive producer. Since 2001, he is active with his own band Benny Anderssons orkester., Björn Kristian Ulvaeus (born 25 April 1945; credited as Björn Ulvæus) is a Swedish songwriter, producer, a former member of the Swedish musical group ABBA (19721982), and co-composer of the musicals "Chess", "Kristina från Duvemåla", and "Mamma Mia!". He co-produced the film "Mamma Mia!" with fellow ABBA member and close friend Benny Andersson., The Hootenanny Singers were a popular folk group from Sweden, founded in 1961. The group included Björn Ulvaeus, who later was a member of ABBA. Other bandmembers were Johan Karlberg, Tony Rooth and Hansi Schwarz. The group was named "The Northern Lights" for an American-released LP in 1966. , PolyGram a/k/a The PolyGram Group was a Dutch owned mass-media company. It started as a major record label recording company founded by Philips and Siemens as a holding company for their music interests in 1979. The name was chosen to reflect the Siemens interest Polydor Records and the Philips interest Phonogram Inc. The company traced its origins through Deutsche Grammophon back to the inventor of the flat disk gramophone, Emil Berliner. Later on, PolyGram expanded into a larger entertainment company, creating film and television divisions. 
In May 1998, it was sold to Seagram which owned Universal Studios. The newly merged company became Universal Music Group. When the new company faced financial difficulties, its parent Seagram was sold in large part to Vivendi, and for a brief time, the company was known as Vivendi Universal. Vivendi is the current owner of UMG., ABBA (stylised ) are a Swedish pop group formed in Stockholm in 1972 by Agnetha Fältskog, Björn Ulvaeus, Benny Andersson, and Anni-Frid Lyngstad. They became one of the most commercially successful acts in the history of popular music, topping the charts worldwide from 1974 to 1982. ABBA won the Eurovision Song Contest 1974 at The Dome in Brighton, UK, giving Sweden its first triumph in the contest, and are the most successful group to ever take part in the competition., Subject: number ones , Relation: producer, Options: (A) benny andersson (B) italy (C) lights (D) stig anderson (E) universal studios
Output (English): benny andersson