Question: What is the name of the prince's offspring in the country that the song Julia came from?

full_context: Document 1: Willem-Alexander of the Netherlands: Willem - Alexander (Dutch: (ˈʋɪləm aːlɛkˈsɑndər); born Willem - Alexander Claus George Ferdinand, 27 April 1967) is the King of the Netherlands, having ascended the throne following his mother's abdication in 2013.
Document 2: Princess Margriet of the Netherlands: Princess Margriet of the Netherlands (Margriet Francisca; born 19 January 1943) is the third daughter of Queen Juliana and Prince Bernhard. As an aunt of the reigning monarch, King Willem-Alexander, she is a member of the Dutch Royal House and currently eighth and last in the line of succession to the throne.
Document 3: Princess Margarita of Greece and Denmark: Princess Margarita of Greece and Denmark (; 18 April 1905 – 24 April 1981) was the eldest child and daughter of Prince Andrew of Greece and Denmark and Princess Alice of Battenberg. She was the first great-great-grandchild of Queen Victoria, and the eldest sister of Prince Philip, Duke of Edinburgh.
Document 4: Catharina-Amalia, Princess of Orange: Princess Catharina-Amalia is the eldest child of King Willem-Alexander and Queen Máxima. She became heir apparent when her father ascended the throne on 30 April 2013.
Document 5: 3JS: 3JS (pronounced: 3J's) is a Dutch band from Volendam, consisting of Jan Dulles, Jaap Kwakman and Jan de Witte. The band became nationally known after the success of their debut album, "Watermensen" in 2007 with their friends Jan Smit and Nick & Simon.
Document 6: Me and Julio Down by the Schoolyard: "Me and Julio Down by the Schoolyard" is a song by American singer-songwriter Paul Simon. It was the second single from his second self-titled studio album (1972), released on Columbia Records.
Document 7: Nick & Simon: Nick made his first TV appearance on the show "Idols", the Dutch version of "Idol", where he came in 11th place. Shortly after, Nick and Simon began to perform together. They were the most booked artists in the Netherlands in 2007.
Document 8: Samen voor altijd: "Samen voor altijd" (English: ""Together forever"") is a song recorded by Dutch artist Marco Borsato and his daughter Jada, featuring Dutch rapper Lange Frans and his son Willem, and Dutch producer John Ewbank and his daughter Day. It was written by John and Day Ewbank and Lange Frans, and was produced by John Ewbank. "Samen voor altijd" is listed on Borsato's twelfth studio album "Duizend spiegels" and was released on 22 November 2013 through label Universal Music.
Document 9: Niels Juel Simonsen: Niels Juel Simonsen (born 16 May 1846 in Copenhagen, died 25 May 1906 also in Copenhagen ) was Danish baritone opera singer, who made his debut in 1874. He gave many performances of Edvard Grieg's songs, in particular "Den Bergtekne".
Document 10: Idols 4: Idols 4 was the fourth season of the Dutch version of Idols hosted by Martijn Krabbé & Wendy van Dijk and held in 2007-2008. The winner was Nikki Kerkhof, with Nathalie Makoma as runner up.
Document 11: Julia (Nick & Simon song): "Julia" is a single by the Dutch duo Nick & Simon, consisting of the singers Nick Schilder and Simon Keizer from Volendam. The song was released on 8 March 2013. The song was written by Schilder and was produced by Gordon Groothedde.
Document 12: Princess Annette of Orange-Nassau, van Vollenhoven-Sekrève: Princess Annette of Orange-Nassau, van Vollenhoven-Sekrève ("legal name:" Annette van Vollenhoven-Sekrève; born 18 April 1972) is the wife of Prince Bernhard of Orange-Nassau, van Vollenhoven, the second son of Princess Margriet of the Netherlands and Pieter van Vollenhoven.
Document 13: One Direction: In 2010, Niall Horan, Zayn Malik, Liam Payne, Harry Styles, and Louis Tomlinson auditioned as solo candidates for the seventh series of the British televised singing competition The X Factor. They failed to progress to the ``Boys ''category at`` judges' houses'' but were put together to form a five - piece boy band at Wembley Arena, in London, England, in July 2010, during the ``bootcamp ''stage of the competition, thus qualifying for the`` Groups'' category. Nicole Scherzinger, a guest judge, and Simon Cowell have both claimed to have come up with the idea of forming the band. In 2013, Cowell said that it ``took him 10 minutes to put them together as a group ''. Subsequently, the group got together for two weeks to get to know each other and to practice. Styles came up with the name One Direction. For their qualifying song at`` judges' houses'', and their first song as a group, One Direction sang an acoustic version of ``Torn ''. Cowell later commented that their performance convinced him that they`` were confident, fun, like a gang of friends, and kind of fearless as well.'' Within the first four weeks of the live shows, they were his last act in the competition. The group quickly gained popularity in the UK.
Document 14: Serious Request: In the Netherlands the Serious Request broadcasts and the Glass House have become a national December tradition, that reaches most of the national population. The 2012 edition was watched and listened to by 12.1 million people over the age of ten, or 84% of Dutch people in that age group. Overall, 88% of the people were aware of the event.
Document 15: American Idol: The top 12 finalists originally included Mario Vazquez, but he dropped out citing 'personal reasons' and was replaced by Nikko Smith. Later, an employee of Freemantle Media, which produces the show, sued the company for wrongful termination, claiming that he was dismissed after complaining about lewd behavior by Vazquez toward him during the show.
ground_truth: Princess Margriet of the Netherlands
sub_queries: Julia >> performer Answer: Nick & Simon
Nick & Simon >> country of origin Answer: Netherlands
Prince Bernhard of the Netherlands >> child Answer: Princess Margriet of the Netherlands