This task involves creating questions from a given passage that involve some kind of complex reasoning (including numerical reasoning). 
The generated questions must require looking at more than one part of the passage to answer. Try to use a variety of reasoning types in your questions (some of the sample reasoning types are illustrated in the 'positive examples' field) and also have a variety of answer types (spans, numbers, dates). A span is a continuous phrase taken directly from the passage or question. In such questions, the answer spans are recommended to be five words. Questions with answer type "number", are expected to start with "How many". For instance, "How long did an event last?" can be phrased as "How many years did an event last?". To increase diversity, try to create more questions for which the answer will be multiple spans. Please create questions that require AT LEAST 2 arithmetic operations as illustrated in the 'positive examples' field. You are encouraged to try DIFFERENT COMBINATIONS of operations and not just limit to the combinations shown in those examples. The more challenging questions you create, the better it is.

Passage: The 5 October 1910 revolution was the overthrow of the centuries-old Portuguese Monarchy and its replacement by the Portuguese Republic. It was the result of a coup d'état organized by the Portuguese Republican Party. By 1910, the Kingdom of Portugal was in deep crisis: British pressure on Portugal's colonies, the royal family's expenses, the assassination of the King and his heir in 1908, changing religious and social views, instability of the two political parties , the dictatorship of João Franco, and the regime's apparent inability to adapt to modern times all led to widespread resentment against the Monarchy. The proponents of the republic, particularly the Republican Party, found ways to take advantage of the situation. The Republican Party presented itself as the only one that had a programme that was capable of returning to the country its lost status and place Portugal on the way of progress. After a reluctance of the military to combat the nearly two thousand soldiers and sailors that rebelled between 3 and 4 October 1910, the Republic was proclaimed at 9 o'clock of the next day from the balcony of the Paços do Concelho in Lisbon. After the revolution, a provisional government led by Teófilo Braga directed the fate of the country until the approval of the Constitution in 1911 that marked the beginning of the First Republic. Among other things, with the establishment of the republic, national symbols were changed: the national anthem and the flag. The revolution produced some civil and religious liberties, although there was no advance in women's rights and in workers rights, unlike what happened in other European countries.
How many national symbols were changed with the beginning of the First Republic?

Passage: Following World War II, Britain retained control of both British Somaliland and Italian Somaliland as protectorates. In 1950, as a result of the Paris Peace Treaties, the United Nations granted Italy trusteeship of Italian Somaliland, but only under close supervision and on the condition—first proposed by the Somali Youth League  and other nascent Somali political organizations, such as Hizbia Digil Mirifle Somali  and the Somali National League —that Somalia achieve independence within ten years. British Somaliland remained a protectorate of Britain until 1960. In 1948, under pressure from their World War II allies and to the dismay of the Somalis, the British returned the Haud  and the Ogaden to Ethiopia, based on a treaty they signed in 1897 in which the British, French and Italians agreed upon the territorial boundaries of Ethiopia with the Ethiopian Emperor Menelik in exchange for his help against raids by hostile clans. Britain included the provision that the Somali residents would retain their autonomy, but Ethiopia immediately claimed sovereignty over the area. This prompted an unsuccessful bid by Britain in 1956 to buy back the Somali lands it had turned over. Britain also granted administration of the almost exclusively Somali-inhabited Northern Frontier District  to Kenyan nationalists despite an informal plebiscite demonstrating the overwhelming desire of the region's population to join the newly formed Somali Republic.
British Somaliland remained a protectorate of Britain for how many years after the Paris Peace Treaties?

Passage: From 1975, Flavin installed permanent works in Europe and the United States, including "Untitled. In memory of Urs Graf" at the Kunstmuseum Basel (conceived 1972, realized 1975); the Kröller-Müller Museum, Otterlo, Netherlands (1977); Hudson River Museum, Yonkers, New York (1979); United States Courthouse, Anchorage, Alaska (1979-89); the Staatliche Kunsthalle Baden-Baden, Germany (1989); the lobby of the MetroTech Center (with Skidmore, Owings & Merrill), Brooklyn, New York (1992); seven lampposts outside the Städtische Galerie im Lenbachhaus, Munich (1994); Hypovereinsbank, Munich (1995); Institut Arbeit und Technik/Wissenschaftspark, Gelsenkirchen, Germany (1996); and the Union Bank of Switzerland, Bern (1996).  Additional sites for Flavins architectural “interventions” became the Grand Central Station in New York (1976), Hamburger Bahnhof in Berlin (1996), and the Chinati Foundation in Marfa, Texas (2000). His large-scale work in colored fluorescent light for six buildings at the Chinati Foundation was initiated in the early 1980s, although the final plans were not completed until 1996. His last artwork was a site-specific art at Santa Maria Annunciata in Chiesa Rossa, Milan, Italy. The 1930s church was designed by Giovanni Muzio. The design for the piece was completed two days before Flavins death on November 29, 1996. Its installation was completed one year later with the assistance of the Dia Art Foundation and Fondazione Prada.

How many years did Flavin install United States Courthouse, Anchorage, Alaska?