TASK DEFINITION: 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.
PROBLEM: Passage: As of the census of 2000, there were 74,563 people, 25,447 households, and 20,154 families residing in the county.  The population density was 346 people per square mile (134/km²).  There were 27,576 housing units at an average density of 128 per square mile (49/km²).  The racial makeup of the county was 83.93% Race (United States Census), 13.11% Race (United States Census) or Race (United States Census), 0.30% Race (United States Census), 0.88% Race (United States Census), 0.03% Race (United States Census), 0.49% from Race (United States Census), and 1.27% from two or more races.  1.52% of the population were Race (United States Census) or Race (United States Census) of any race. 15.5% were of irish people, 15.0% german people, 12.0% english people, 11.5% United States or American and 7.1% italian people ancestry.

SOLUTION: How many ancestry groups each made up more than 10% of the population but no more than 15%?

PROBLEM: Passage: During the Democratic Kampuchea days, the 68,000-member Khmer Rouge-dominated CPNLAF  force, which completed its conquest of Phnom Penh, Cambodia in April 1975, was renamed the RAK . This name dated back to the peasant uprising that broke out in the Samlot district of Battambang Province in 1967. Under its long-time commander and then Minister of Defense Son Sen, the RAK had 230 battalions in 35 to 40 regiments and in 12 to 14 brigades. The command structure in units was based on three-person committees in which the political commissar ranked higher than the military commander and his deputy. Cambodia was divided into zones and special sectors by the RAK, the boundaries of which changed slightly over the years. Within these areas, the RAK's first task was the peremptory execution of former Khmer National Armed Forces  officers and of their families, without trial or fanfare to eliminate KR enemies. The RAK's next priority was to consolidate into a national army the separate forces that were operating more or less autonomously in the various zones. The Khmer Rouge units were commanded by zonal secretaries who were simultaneously party and military officers, some of whom were said to have manifested "warlord characteristics". Troops from one zone frequently were sent to another zone to enforce discipline. These efforts to discipline zonal secretaries and their dissident or ideologically impure cadres gave rise to the purges that were to decimate RAK ranks, to undermine the morale of the victorious army, and to generate the seeds of rebellion. In this way, the KR used the RAK to sustain and fuel its violent campaign.

SOLUTION: From what year did the name RAK originate?

PROBLEM: Passage: Bayinnaung now looked to Siam, which successfully fought off the first Burmese invasion in 1547-1549. However, Bayinnaung now had a far larger empire at his disposal. Knowing that Siam be much more difficult than Shan states and Lan Na campaigns, Bayinnaung assembled the largest army yet—60,000 men, 2400 horses and 360 elephants, two and a half times larger than his previous high. The army would have been larger but the ruler of Chiang Mai, Mekuti, did not send in his share of the levy. Four Burmese armies invaded northern Siam in November 1563, and had overcome Siamese stands at Kamphaeng Phet, Sukhothai and Phitsanulok by January 1564. Armies then came down on Ayutthaya but were kept at bay for days by Portuguese warships and batteries at the harbour. Siamese defences collapsed after the Burmese captured the Portuguese ships on 7 February 1564 . King Maha Chakkraphat of Siam surrendered on 18 February 1564 . The king and crown prince Ramesuan were brought back to Pegu as hostages. Bayinnaung left Mahinthrathirat, one of Maha Chakkraphat's sons as vassal king, along with a garrison of 3,000 men.

SOLUTION:
For how many years did the first Burmese invasion last?