Question: Who fathered Helena Sverkersdotter of the country the performer of Don't Blame Your Daughter is from?

full_context: Document 1: 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 2: Father and Daughter: "Father and Daughter" is a song by the American singer-songwriter Paul Simon. The song, written for the animated family film "The Wild Thornberrys Movie", was released as a single in 2002. An alternative version appears on the singer's eleventh solo album "Surprise" (2006).
Document 3: Her Diamonds: "Her Diamonds" is the lead single from Rob Thomas's second studio album "Cradlesong". Thomas confirmed the single's release via a Twitter account he had created on March 11, 2009. The single premiered on April 22, preceding the release of "Cradlesong" on June 30. On July 3, 2009, Thomas confirmed in an interview with Natalie Morales and Lester Holt on NBC's "Today" show that the song references his wife Marisol's auto-immune disease. Thomas announced his wife sang backup on the track and also helped produce its arrangement.
Document 4: I Don't Blame You: "I Don't Blame You" is a song by the American singer-songwriter, Cat Power, also known as Chan Marshall. It is the first song on her sixth album, "You Are Free", released in February 2003.
Document 5: Don't Blame Your Daughter (Diamonds): "Don't Blame Your Daughter (Diamonds)" is a rock song by The Cardigans. It was released as the second single from their sixth album Super Extra Gravity in Europe in February 2006.
Document 6: 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 7: 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 8: 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 9: 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 10: 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.
Document 11: 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 12: 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 13: 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 14: 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 15: Don't (Ed Sheeran song): "Don't" is a song recorded by English singer-songwriter, Ed Sheeran, for his second studio album, "×" (2014). Written by Sheeran and Benny Blanco and produced by Blanco and Rick Rubin, the song samples "Don't Mess with My Man" by Lucy Pearl. It was initially planned as the album's lead single, but was passed over in favour of "Sing". It was instead released to iTunes on 13 June 2014 as the second "instant grat" promotional single from "×". "Don't" officially impacted US contemporary hit radio on 15 July 2014 and was released independently on 24 August 2014 as the album's second single.
ground_truth: Sverker II of Sweden
sub_queries: Don't Blame Your Daughter >> performer Answer: The Cardigans
What country released The The Cardigans ? Answer: Sweden
Who fathered Helena Sverkersdotter of Sweden ? Answer: Sverker II of Sweden