Question: What was the construction year for the astronomical clock in Jiří Kejval's birthplace?

full_context: Document 1: Jiří Havlis: Jiří Havlis (16 November 1932 – 31 January 2010) was a Czech rower who competed for Czechoslovakia in the 1952 Summer Olympics.
Document 2: Andraž Vehovar: He won a silver medal in the K1 event at the 1996 Summer Olympics in Atlanta. Vehovar's efforts earned him the Slovenian Sportsman of the year award in 1996.
Document 3: Astronomical clock: The first clock was built between 1352 and 1354 and stopped working sometime at the beginning of the 16th century. A second clock was then built by Herlin, Conrad Dasypodius, the Habrecht brothers, and others, between 1547 and 1574. This clock stopped working in 1788 or 1789 (as it apparently stopped working gradually, each component being disconnected
Document 4: Jan Šindel: Jan Šindel was born in the Bohemian town Hradec Králové probably in the 1370s. As a young man he came to Prague to study at Charles University. In 1395 or 1399 he became the Master of Arts at Prague University. In 1406 he worked at the parish school of the St. Nicolas Church in the Lesser Town of Prague. Later he worked as a teacher of mathematics in Vienna, where he also studied medicine. Then he came back to Prague and became the professor of astronomy at Charles University, where he became Doctor of Medicine and rector of the university in 1410.
Document 5: Prague astronomical clock: The oldest part of the Orloj, the mechanical clock and astronomical dial, dates back to 1410 when it was made by clockmaker Mikuláš of Kadaň and Jan Šindel, then later a professor of mathematics and astronomy at Charles University. The first recorded mention of the clock was on 9 October 1410. Later, presumably around 1490, the calendar dial was added and the clock facade was decorated with gothic sculptures.
Document 6: Jiří Svoboda (volleyball): Jiří Svoboda (born April 19, 1941) is a Czech former volleyball player who competed for Czechoslovakia in the 1968 Summer Olympics.
Document 7: Computer: Many mechanical aids to calculation and measurement were constructed for astronomical and navigation use. The planisphere was a star chart invented by Abū Rayhān al-Bīrūnī in the early 11th century. The astrolabe was invented in the Hellenistic world in either the 1st or 2nd centuries BC and is often attributed to Hipparchus. A combination of the planisphere and dioptra, the astrolabe was effectively an analog computer capable of working out several different kinds of problems in spherical astronomy. An astrolabe incorporating a mechanical calendar computer and gear-wheels was invented by Abi Bakr of Isfahan, Persia in 1235. Abū Rayhān al-Bīrūnī invented the first mechanical geared lunisolar calendar astrolabe, an early fixed-wired knowledge processing machine with a gear train and gear-wheels, circa 1000 AD.
Document 8: Time: The most precise timekeeping device of the ancient world was the water clock, or clepsydra, one of which was found in the tomb of Egyptian pharaoh Amenhotep I (1525–1504 BC). They could be used to measure the hours even at night, but required manual upkeep to replenish the flow of water. The Ancient Greeks and the people from Chaldea (southeastern Mesopotamia) regularly maintained timekeeping records as an essential part of their astronomical observations. Arab inventors and engineers in particular made improvements on the use of water clocks up to the Middle Ages. In the 11th century, Chinese inventors and engineers invented the first mechanical clocks driven by an escapement mechanism.
Document 9: Jiří Jebavý: Jiří Jebavý is a Czech professional ice hockey defenceman who currently plays for HC Slavia Praha of the Czech Extraliga.
Document 10: 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 11: Jiří Kejval: Jiří Kejval (born 30 November 1967 in Prague) is an entrepreneur, President of the Czech Olympic Committee, member of IOC and former international rower.
Document 12: Valeriy Sushkevych: Valeriy Sushkevych (born 14 June 1954, in Tarashcha, Kiev Oblast) is a Ukrainian politician and public figure. Member of Verhovna Rada. President of the National Committee of Sports for the Disabled of Ukraine (National Paralympic Committee of Ukraine), head of the Ukrainian public socio-political association "National Assembly of Disabled of Ukraine", president of the Association "Sports Industry of Ukraine."
Document 13: 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 14: President of the International Olympic Committee: President of the International Olympic Committee Président du Comité international olympique Olympic rings Incumbent Thomas Bach since 10 September 2013 International Olympic Committee Style His Excellency Member of IOC Executive Board Residence Lausanne Palace Seat IOC Headquarters, Lausanne, Switzerland Appointer IOC Session Elected by the IOC Members by secret ballot Term length Eight years Renewable once for four years Constituting instrument Olympic Charter Formation 1894 First holder Demetrius Vikelas Website International Olympic Committee
Document 15: 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.
ground_truth: 1410
sub_queries: What is Jiří Kejval's birthplace? Answer: Prague
when was the astronomical clock in Prague built Answer: 1410