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.

[EX Q]: Passage: After a gradual 5-year recovery to an intraday high of 2,239.51 on October 31, 2007, the highest reached since February 16, 2001, the index corrected below the 2,000 level in early 2008 amid the Late-2000s recession, the United States housing bubble and the Financial crisis of 2007-2010. Panic focusing on the failure of the investment banking industry culminated in a loss of more than 10% on September 29, 2008, subsequently plunging the index firmly into bear market territory. The NASDAQ-100, with much of the broader market, experienced a Limit down open on October 24 and reached a 6-year intraday low of 1,018 on November 20, 2008.
[EX A]: How many months passed between the index high and its 6-year intraday low?

[EX Q]: Passage: The Japanese attempted to deny the Russians use of Port Arthur. During the night of 13-14 February, the Japanese attempted to block the entrance to Port Arthur by sinking several concrete-filled steamers in the deep water channel to the port, but they sank too deep to be effective. A similar attempt to block the harbour entrance during the night of 3-4 May also failed. In March, the charismatic Vice Admiral Makarov had taken command of the First Russian Pacific Squadron with the intention of breaking out of the Port Arthur blockade. On 12 April 1904, two Russian pre-dreadnought battleships, the flagship Petropavlovsk and the Pobeda, slipped out of port but struck Japanese mines off Port Arthur. The Petropavlovsk sank almost immediately, while the Pobeda had to be towed back to port for extensive repairs. Admiral Makarov, the single most effective Russian naval strategist of the war, perished on the battleship Petropavlovsk. On 15 April 1904, the Russian government made overtures threatening to seize the British war correspondents who were taking the ship Haimun into warzones to report for the London-based Times newspaper, citing concerns about the possibility of the British giving away Russian positions to the Japanese fleet. The Russians quickly learned, and soon employed, the Japanese tactic of offensive minelaying. On 15 May 1904, two Japanese battleships, the Yashima and the Hatsuse, were lured into a recently laid Russian minefield off Port Arthur, each striking at least two mines. The Hatsuse sank within minutes, taking 450 sailors with her, while the Yashima sank while under tow towards Korea for repairs. On 23 June 1904, a breakout attempt by the Russian squadron, now under the command of Admiral Wilgelm Vitgeft, failed. By the end of the month, Japanese artillery were firing shells into the harbour.
[EX A]: How many days passed between the two Russian pre-dreadnaught battleships struck mines and the two Japanese battleships triking mines?

[EX Q]: Passage: Around 50,000 of the former czar's army troops were stationed in Finland in January 1918. The soldiers were demoralised and war-weary, and the former serfs were thirsty for farmland set free by the revolutions. The majority of the troops returned to Russia by the end of March 1918. In total, 7,000 to 10,000 Red Russian soldiers supported the Finnish Reds, but only around 3,000, in separate, smaller units of 100-1,000 soldiers, could be persuaded to fight in the front line. The revolutions in Russia divided the Soviet army officers politically and their attitude towards the Finnish Civil War varied. Mikhail Svechnikov led Finnish Red troops in western Finland in February and Konstantin Yeremejev Soviet forces on the Karelian Isthmus, while other officers were mistrustful of their revolutionary peers and instead co-operated with General Mannerheim, in disarming Soviet garrisons in Finland. On 30 January 1918, Mannerheim proclaimed to Russian soldiers in Finland that the White Army did not fight against Russia, but that the objective of the White campaign was to beat the Finnish Reds and the Soviet troops supporting them. The number of Soviet soldiers active in the civil war declined markedly once Germany attacked Russia on 18 February 1918. The German-Soviet Treaty of Brest-Litovsk of 3 March restricted the Bolsheviks' support for the Finnish Reds to weapons and supplies. The Soviets remained active on the south-eastern front, mainly in the Battle of Rautu on the Karelian Isthmus between February and April 1918, where they defended the approaches to Petrograd.
[EX A]:
How many former czar's army troops were stationed in Finland in January 1918?