Question: Who fathered Helena Sverkersdotter of the country that released the performer of Best Of?

full_context: Document 1: Helen of Sweden (13th century): Helen of Sweden ( 1190 – 1247, Swedish: "Helena") was a Swedish princess and abbess, daughter of King Sverker II of Sweden and the mother of Queen Catherine of Sweden. She was Abbess of Vreta Abbey.
Document 2: Best of 061122‒071122: Best of 061122‒071122 is the first compilation album released by Swedish Singer-songwriter Miss Li. Released on December 25, 2007, her fourth album in just over a year, the album debuted at #29 on the Swedish albums chart, but reached a peak at #11 in August 2008.
Document 3: The Cardigans discography: The Cardigans are a band from Sweden. They have released 6 studio albums which in total have sold about 15 million copies worldwide. This is a list of their album and single releases.
Document 4: Bengt Lagerberg: Bengt Lagerberg (born 5 July 1973), is best known as the drummer in the Swedish rock band The Cardigans. He is currently living in Malmö.
Document 5: Best Of (The Cardigans album): Best Of is a greatest hits album by the Swedish group The Cardigans, released in Europe in January 2008. It contains twenty-one singles and album tracks. There is also a double-CD version with rare tracks and B-sides. Both versions of the album contain no new songs, though some tracks had previously been released only in the UK or Japan.
Document 6: Best of Hilary Duff: Best of Hilary Duff is the first greatest hits album by American recording artist Hilary Duff. It was released on November 11, 2008, by Hollywood Records. The 12-track album consists of eight of Duff's previous singles, as well as two new recordings: "Reach Out" and "Holiday", and two remixes to the songs. Only one single was released from the album, the Ryan "Alias" Tedder-produced "Reach Out", which became her third single to chart at number one on the "Billboard" Hot Dance Club Play. Despite being a greatest hits album, her singles "Someone's Watching Over Me", "Our Lips Are Sealed" and "Beat of My Heart" aren't included in the standard edition of the album.
Document 7: Helén murder: The Helén murder () is a sadistic murder of 10-year-old Helén Nilsson in Hörby, Sweden, in March 1989. The murderer, Ulf Olsson, the so-called Helén man ("Helén-mannen"), was convicted in April 2005, having been found after a DNA test in 2004.
Document 8: Victoria, Crown Princess of Sweden: Victoria, Crown Princess of Sweden, Duchess of Västergötland (Victoria Ingrid Alice Désirée; , born 14 July 1977) is the heir apparent to the Swedish throne, as the eldest child of King Carl XVI Gustaf. If she ascends to the throne as expected, she will be Sweden's fourth queen regnant (after Margaret, Christina and Ulrika Eleonora) and the first since 1720.
Document 9: The Cardigans: The Cardigans are a Swedish rock band formed in Jönköping, Sweden, in 1992 by guitarist Peter Svensson, bassist Magnus Sveningsson, drummer Bengt Lagerberg, keyboardist Lars-Olof Johansson and lead singer Nina Persson. The group's line-up has been very stable, the only change being that their post-hiatus shows since 2012 have been with Oskar Humlebo on guitar instead of Svensson.
Document 10: Lovefool: ``Lovefool ''is a song written by Peter Svensson and Nina Persson for The Cardigans' third studio album, First Band on the Moon (1996). It was released as a single on 14 September 1996 in the United Kingdom and internationally on 5 October 1996. It was released as the album's lead single in 1996 and became the Cardigans' first international hit single, topping the Billboard Hot 100 Airplay chart and making appearances on six other Billboard charts. In 1997, the song found international success, peaking at number two on the UK Singles Chart and finding moderate success on some other European charts. The single also topped the charts in New Zealand, and was certified Gold in Australia.
Document 11: Hep Stars: The Hep Stars were a Swedish rock group, formed in 1963 in Stockholm. During 1965-66 the band was the most successful of contemporary 1960s Swedish pop groups performing in the English language. Outside The Nordic Countries the band is best known as a launching point for the keyboard player and composer Benny Andersson, who went on to enjoy worldwide success with ABBA.
Document 12: Best of the Beast: Best of the Beast was Iron Maiden's first "best of" album, released in 1996 in three formats: a 34 track (four disc) vinyl, a 27 track (two disc) CD, a 16 track (single disc) CD and MiniDisc. The vinyl edition is, to date, the band's longest record release, running for over three hours.
Document 13: Helvis of Ibelin: Helvis of Ibelin (after 1178 – before 1 June 1216) was a daughter of Balian of Ibelin and his wife, Maria Komnene, who was the dowager Queen of Jerusalem. Helvis was a member of the House of Ibelin. She was Lady of Sidon by her first and second marriage.
Document 14: Friends (Swedish band): Friends was a Swedish "dansband" or pop group formed in 1999 and made up of Stefan Brunzell, Tony Haglund, Kristian Hermanson, Nina Inhammar, Kim Kärnfalk and Peter Strandberg. They were put together from auditions on the reality television show Friends på turne ("Friends on Tour"), made by Bert Karlsson for TV4. The show was a success and Friends competed on Melodifestivalen 2000, reaching second place. They won Melodifestivalen 2001 with "Lyssna till ditt hjärta" and represented Sweden at the Eurovision Song Contest 2001 with the English version of the song, "Listen to Your Heartbeat" wearing sexy, tight, leather fitted clothing. Prior to the Eurovision performance, the Swedish delegation was forced to pay royalties to the team behind "Liefde is een kaartspel", an earlier Belgian entry, making the song the first admitted case of plagiarism in Eurovision history.
Document 15: Yolanda of Poland: Blessed Yolanda of Poland (also known as Helen; 1235 – 11 June 1298) was the daughter of King Béla IV of Hungary and Maria Laskarina. She was the sister of Saint Margaret of Hungary and Saint Kinga (Cunegunda). One of her paternal aunts was the great Franciscan saint, Elizabeth of Hungary.
ground_truth: Sverker II of Sweden
sub_queries: Best Of >> performer Answer: The Cardigans
What country released The The Cardigans ? Answer: Sweden
Who fathered Helena Sverkersdotter of Sweden ? Answer: Sverker II of Sweden