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.

Q: Passage: In 1950, Sultan Omar Ali Saifuddien III, upon his ascension to the throne, negotiated with the British for an increase in corporate taxes, growing from 10% to 30% in 1953. A Malayan dollar$1.2 million (US$0.39 million) allotment to Brunei for war damages during the Japanese occupation of British Borneo increased from M$1 million in 1946 to M$100 million (US$32.6 million) in 1952. A five-year development plan with a budget of M$100 million was also implemented in 1953, with infrastructure receiving the largest percentage (80%) and the rest going toward social programmes. Together with the expansion of the oil and gas industry, commercialisation began to transform Bruneis capital and a large number of public buildings were constructed, along with the development of a central business district in the 1970s and 1980s. On 1 August 2007, Sultan Hassanal Bolkiah gave consent for the expansion of the city from 4.97 sq mi to 38.75 sq mi.

A: How many more square miles was the city after its expansion?
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Q: Passage: Worldwide sales of hybrid vehicles produced by Toyota reached 1 million vehicles by May 31, 2007, and the 2 million mark was reached by August 2009, with hybrids sold in 50 countries. The 5 million hybrid sales milestone was reached in March 2013. During 2012, Toyota and Lexus hybrid models sold more than 1 million units a year for the first time, with 1.219 million units sold. During 2013, TMC sold 1.279 million units, and the 6 million sales milestone was achieved in December 2013, just nine months after its latest million unit milestone. The 7 million sales mark was reached in September 2014, again, selling one million hybrids in nine months, and the 8 million sales milestone was achieved in July 2015, just 10 months after the previous million-unit milestone. The 9 million sales mark was reached in April 2016, again, selling one million hybrids in just nine months, and the 10 million milestone in January 2017, one more time nine months later. Toyota estimates that up to January 31, 2017, its hybrids have saved about 7.66 billion U.S. gallons of gasoline (29 billion liters) compared to the amount used by gasoline-powered vehicles of similar size, and have emitted approximately 77 million fewer tons of CO2 emissions than would have been emitted by gasoline-powered vehicles of similar size and driving performance.

A: Did it take longer to go from 6 - 7 million units sold, or from 7 - 8 million units sold?
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Q: Passage: The failure of the Şarköy-Bulair operation and the deployment of the 2nd Serbian Army together with its much needed heavy siege artillery sealed Adrianople's fate. On 11 March after a two weeks' bombardment which destroyed many of the fortified structures around the city, the final assault started with Allied forces enjoying a crushing superiority over the Ottoman garrison. Under the command of General Nikola Ivanov, the Bulgarian 2nd Army with 106,425 men and two Serb divisions with 47,275 men conquered the city, with the Bulgarians suffering 8,093 and the Serbs 1,462 casualties. The Ottoman casualties for the entire Adrianople campaign reached 23,000 killed. The number of prisoners is less clear. The Ottoman Empire began the war with 61,250 men in the Adrianople fortress. Richard Hall notes that 60,000 men were captured. Adding to the 33,000 killed, the modern Turkish General Staff History notes that 28,500 man survived captivity leaving only 10,000 men unaccounted for as possibly captured . Bulgarian losses for the entire Adrianople campaign amounted to 7,682. This was the last and decisive battle that was necessary for a quick end to the war, even though it is speculated that the fortress would have fallen eventually due to starvation. The most important result was that now the Ottoman command lost all hopes of regaining the initiative, which made any further fighting pointless.

A:
Approximately when did the bombardment of Adrianople start?
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