Question: What is the name of the castle in the city Jan Klapáč was born in?

full_context: Document 1: Jan Gruber: Jan Gruber (born 15 March 1984, in Prague) is a Czech rower. He competed for the Czech Republic as a member of the men's coxless four team which finished 5th at the 2008 Summer Olympics.
Document 2: President of the Czech Republic: President of the Czech Republic Prezident České republiky Presidential Standard Incumbent Miloš Zeman since 8 March 2013 Style His Excellency Residence Prague Castle Seat Prague, Czech Republic Appointer Popular vote Term length Five years Renewable once, consecutively Inaugural holder Václav Havel 2 February 1993 Formation Constitution of the Czech Republic Salary 2,235,600 Kč ($86,830) Website www.hrad.cz
Document 3: Prague Castle: Prague Castle General information Architectural style Baroque and Mannerism Location 119 08 Prague 1, Czech Republic Current tenants Miloš Zeman, President of the Czech Republic and the First Lady Construction started 870; 1148 years ago (870) Completed 1929; 89 years ago (1929) Design and construction Architect Matthias of Arras and Peter Parler Website www.hrad.cz
Document 4: Arnold Kadlec: Arnold Kadlec (born January 8, 1959 in Most, Czechoslovakia) is a retired Czechoslovak ice hockey player. He played for the Czechoslovakian team in the 1980 and 1984 Winter Olympics, winning a silver medal in 1984.
Document 5: Jan Klapáč: Jan Klapáč (born February 27, 1941) is a Czech former professional ice hockey player, born in Prague, Protectorate of Bohemia and Moravia. He is the grandfather of alpine skier and snowboarder Ester Ledecká.
Document 6: Vyšehrad: Vyšehrad (Czech for "upper castle") is a historic fort located in the city of Prague, Czech Republic, just over 3 km southeast of Prague Castle, on the right bank of the Vltava River. It was built probably in the 10th century. Situated within the fort is the Basilica of St. Peter and St. Paul, as well as the Vyšehrad Cemetery, containing the remains of many famous people from Czech history, among them Antonín Dvořák, Bedřich Smetana, Karel Čapek, and Alphonse Mucha. It also contains Prague's oldest Rotunda of St. Martin from the 11th century.
Document 7: Czechoslovakia: Several accomplished professional tennis players including Ivan Lendl, Jan Kodeš, Miloslav Mečíř, Hana Mandlíková, Martina Hingis, Martina Navratilova, Jana Novotna, Petra Kvitová and Daniela Hantuchová were born in Czechoslovakia.
Document 8: Václav Pantůček: Václav Pantůček (24 November 1934 in Mikulov, Czechoslovakia – 21 July 1994 in Brno, Czech Republic) was a Czech ice hockey player who competed in the 1956 Winter Olympics and in the 1960 Winter Olympics.
Document 9: Vlasta Průchová: Vlasta Průchová (12 July 1926, Ružomberok – 16 June 2006, Prague) was a Czech jazz singer. From the second half of the 1940s, she gradually built up her leading position in the Czech jazz scene. Průchová was the mother of the renowned Czech-American pianist and composer Jan Hammer.
Document 10: Embassy of France, Prague: The Embassy of France to the Czech Republic is located on Velkopřevorské náměstí, in Malá Strana, Prague, next to Vltava's island Kampa. It occupies the large baroque Buquoy Palace (1719). The ground floor of the Embassy was flooded during the August 2002 floods.
Document 11: Václav Klaus: Václav Klaus (; born 19 June 1941) is a Czech economist and politician who served as the second President of the Czech Republic from 2003 to 2013. He also served as the second and last Prime Minister of the Czech Republic, a federal subject of the Czech and Slovak Federative Republic, from July 1992 until the dissolution of Czechoslovakia in January 1993, and as the first Prime Minister of the newly-independent Czech Republic from 1993 to 1998.
Document 12: Clam-Gallas Palace: The Clam-Gallas Palace () is a Baroque palace in Prague, the capital of the Czech Republic. The building is situated on the corner of Husova Street and Mariánské Square, in Prague Old Town. The palace was first designed by the imperial court architect Johann Bernhard Fischer von Erlach, from Vienna. It was built in 1714–18 by the Italian architect Domenico Canevale. During the rest of the 18th century, Jewish balls and concerts were held in the palace, and were attended by noteworthy artists including Mozart and Beethoven.
Document 13: Miloš Zeman: Miloš Zeman (; born 28 September 1944) is a Czech politician serving as the third and current President of the Czech Republic since 8 March 2013. He previously served as Prime Minister of the Czech Republic from 1998 to 2002. As Leader of the Czech Social Democratic Party during the 1990s, he transformed his party into one of the country's major political forces. Zeman was Speaker of the Chamber of Deputies, the lower house of the Czech parliament, from 1996 until he became Prime Minister two years later in 1998.
Document 14: Cubism: The leading Cubist architects were Pavel Janák, Josef Gočár, Vlastislav Hofman, Emil Králíček and Josef Chochol. They worked mostly in Prague but also in other Bohemian towns. The best-known Cubist building is the House of the Black Madonna in the Old Town of Prague built in 1912 by Josef Gočár with the only Cubist café in the world, Grand Café Orient. Vlastislav Hofman built the entrance pavilions of Ďáblice Cemetery in 1912–1914, Josef Chochol designed several residential houses under Vyšehrad. A Cubist streetlamp has also been preserved near the Wenceslas Square, designed by Emil Králíček in 1912, who also built the Diamond House in the New Town of Prague around 1913.
Document 15: Jan Minář: Jan Minář (born April 9, 1981 in Prague) is a professional Czech tennis player. His brother Ivo is also a professional player.
ground_truth: Prague Castle
sub_queries: What was Jan Klapáč's city of birth? Answer: Prague
what is the name of the castle in Prague Answer: Prague Castle