Question: Who is the child of Maria Leopoldina of the country where the university where Hans Popper studied is located?

full_context: Document 1: Karl Popper: In 1928, he earned a doctorate in psychology, under the supervision of Karl Bühler. His dissertation was entitled "Die Methodenfrage der Denkpsychologie" (The question of method in cognitive psychology). In 1929, he obtained the authorisation to teach mathematics and physics in secondary school, which he started doing. He married his colleague Josefine Anna Henninger (1906–1985) in 1930. Fearing the rise of Nazism and the threat of the Anschluss, he started to use the evenings and the nights to write his first book Die beiden Grundprobleme der Erkenntnistheorie (The Two Fundamental Problems of the Theory of Knowledge). He needed to publish one to get some academic position in a country that was safe for people of Jewish descent. However, he ended up not publishing the two-volume work, but a condensed version of it with some new material, Logik der Forschung (The Logic of Scientific Discovery), in 1934. Here, he criticised psychologism, naturalism, inductionism, and logical positivism, and put forth his theory of potential falsifiability as the criterion demarcating science from non-science. In 1935 and 1936, he took unpaid leave to go to the United Kingdom for a study visit.
Document 2: Napoleon: Napoleon turned his focus to domestic affairs after the war. Empress Joséphine had still not given birth to a child from Napoleon, who became worried about the future of his empire following his death. Desperate for a legitimate heir, Napoleon divorced Joséphine in January 1810 and started looking for a new wife. Hoping to cement the recent alliance with Austria through a family connection, Napoleon married the Archduchess Marie Louise, who was 18 years old at the time. On 20 March 1811, Marie Louise gave birth to a baby boy, whom Napoleon made heir apparent and bestowed the title of King of Rome. His son never actually ruled the empire, but historians still refer to him as Napoleon II.
Document 3: Early life of Pedro II of Brazil: Pedro II's mother died when he was one year old, and his father remarried, to Amélie of Leuchtenberg, a couple years later. Pedro II formed a strong bond with Empress Amélie, whom he considered to be his mother throughout the remainder of his life. When Pedro I abdicated on 7 April 1831 and departed to Europe with Amélie, Pedro II was left behind with his sisters and became the second emperor of Brazil. He was raised with simplicity but received an exceptional education towards shaping what Brazilians then considered an ideal ruler. The sudden and traumatic loss of his parents, coupled with a lonely and unhappy upbringing, greatly affected Pedro II and shaped his character.
Document 4: Warsaw: Other green spaces in the city include the Botanic Garden and the University Library garden. They have extensive botanical collection of rare domestic and foreign plants, while a palm house in the New Orangery displays plants of subtropics from all over the world. Besides, within the city borders, there are also: Pole Mokotowskie (a big park in the northern Mokotów, where was the first horse racetrack and then the airport), Park Ujazdowski (close to the Sejm and John Lennon street), Park of Culture and Rest in Powsin, by the southern city border, Park Skaryszewski by the right Vistula bank, in Praga. The oldest park in Praga, the Praga Park, was established in 1865–1871 and designed by Jan Dobrowolski. In 1927 a zoological garden (Ogród Zoologiczny) was established on the park grounds, and in 1952 a bear run, still open today.
Document 5: Botanical Garden of the University of Vienna: The Botanical Garden of the University of Vienna is a botanical garden in Vienna, Austria. It covers 8 hectares and is immediately adjacent to the Belvedere gardens. It is a part of the University of Vienna.
Document 6: Queen Victoria: Victoria was the daughter of Prince Edward, Duke of Kent and Strathearn, the fourth son of King George III. Both the Duke of Kent and King George III died in 1820, and Victoria was raised under close supervision by her German-born mother Princess Victoria of Saxe-Coburg-Saalfeld. She inherited the throne aged 18, after her father's three elder brothers had all died, leaving no surviving legitimate children. The United Kingdom was already an established constitutional monarchy, in which the sovereign held relatively little direct political power. Privately, Victoria attempted to influence government policy and ministerial appointments; publicly, she became a national icon who was identified with strict standards of personal morality.
Document 7: José, Prince of Brazil: D. José, Prince of Brazil, Duke of Braganza (; 20 August 1761 – 11 September 1788) was the heir apparent to the Kingdom of Portugal until his death in 1788, as the eldest child of Queen Maria I of Portugal and King Pedro III of Portugal, members of the House of Braganza.
Document 8: Friedrich Hayek: Friedrich August von Hayek was born in Vienna to August von Hayek and Felicitas Hayek (née von Juraschek). Friedrich's father, from whom he received his middle name, was also born in Vienna in 1871. He was a medical doctor employed by the municipal ministry of health, with passion in botany, in which he wrote a number of monographs. August von Hayek was also a part-time botany lecturer at the University of Vienna. Friedrich's mother was born in 1875 to a wealthy, conservative, land-owning family. As her mother died several years prior to Friedrich's birth, Felicitas gained a significant inheritance which provided as much as half of her and August's income during the early years of their marriage. Hayek was the oldest of three brothers, Heinrich (1900–69) and Erich (1904–86), who were one-and-a-half and five years younger than him.
Document 9: Warsaw: The flora of the city may be considered very rich in species. The species richness is mainly due to the location of Warsaw within the border region of several big floral regions comprising substantial proportions of close-to-wilderness areas (natural forests, wetlands along the Vistula) as well as arable land, meadows and forests. Bielany Forest, located within the borders of Warsaw, is the remaining part of the Masovian Primeval Forest. Bielany Forest nature reserve is connected with Kampinos Forest. It is home to rich fauna and flora. Within the forest there are three cycling and walking trails. Other big forest area is Kabaty Forest by the southern city border. Warsaw has also two botanic gardens: by the Łazienki park (a didactic-research unit of the University of Warsaw) as well as by the Park of Culture and Rest in Powsin (a unit of the Polish Academy of Science).
Document 10: Siegfried Popper: Siegfried Popper (5 January 1848, Prague – 19 April 1933, Prague) was an eminent naval architect in late-nineteenth- and early twentieth-century middle Europe.
Document 11: Gardens of Versailles: The Gardens of Versailles (French: Jardins du château de Versailles; French pronunciation: ​ (ʒaʁdɛ̃ dy ʃato də versaij)) occupy part of what was once the Domaine royal de Versailles, the royal demesne of the château of Versailles. Situated to the west of the palace, the gardens cover some 800 hectares of land, much of which is landscaped in the classic French Garden style perfected here by André Le Nôtre. Beyond the surrounding belt of woodland, the gardens are bordered by the urban areas of Versailles to the east and Le Chesnay to the north - east, by the National Arboretum de Chèvreloup to the north, the Versailles plain (a protected wildlife preserve) to the west, and by the Satory Forest to the south.
Document 12: Portuguese Empire: Although the royal family returned to Portugal in 1821, the interlude led to a growing desire for independence amongst Brazilians. In 1822, the son of Dom João VI, then prince - regent Dom Pedro I, proclaimed the independence of Brazil on September 7, 1822, and was crowned Emperor of the new Empire of Brazil. Unlike the Spanish colonies of South America, Brazil's independence was achieved without significant bloodshed.
Document 13: Paul Hörbiger: Paul Hörbiger was born in the Hungarian capital Budapest, then part of Austria-Hungary, the son of engineer Hanns Hörbiger, founder of the "Welteislehre" cosmological concept, and elder brother of actor Attila Hörbiger. In 1902 the family returned to Vienna, while Paul attended the "gymnasium" (grammar or high school) at St. Paul's Abbey in Carinthia. Having obtained his "Matura" degree, he served in a mountain artillery regiment of the Austro-Hungarian Army in World War I, discharged in 1918 with the rank of an "Oberleutnant".
Document 14: Hokkaido University Botanical Gardens: The are botanical gardens operated by Hokkaido University. They are located at North 3, West 8, Chūō-ku, Sapporo, Hokkaidō, Japan, and open daily; an admission fee is charged.
Document 15: Hans Popper: Popper was born to Carl and Emilie Popper in Vienna on 24 November 1903. His father was a prominent physician and, as a captain in the medical corps, was called to active army duty at the outbreak of World War I. Hans Popper received a classical education at the "Akademische Gymnasium" and followed his father's footsteps by entering the Medical School of the University of Vienna in 1922 and graduating in 1928.
ground_truth: Pedro II
sub_queries: Where did Hans Popper study or work? Answer: University of Vienna
Botanical Garden of University of Vienna >> country Answer: Austria
Maria Leopoldina of Austria >> child Answer: Pedro II