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.

Example Input: Passage: Concerned by the Burmese consolidation of Shan states and Laotian states, China launched four invasions of Burma between 1765 and 1769. At first, the Qianlong Emperor envisaged an easy war, and sent in only the Green Standard troops stationed in Yunnan. The Qing invasion came as the majority of Burmese forces were deployed in their latest invasion of Siam. Nonetheless, battle-hardened Burmese troops defeated the first two invasions of 1765-1766 and 1766-1767 at the border. The regional conflict now escalated to a major war that involved military manoeuvres nationwide in both countries. The third invasion  led by the elite Manchu Bannermen nearly succeeded, penetrating deep into central Burma within a few days' march from Ava. But the Bannermen of northern China could not cope with unfamiliar tropical terrains and lethal endemic diseases, and were driven back with heavy losses. After the close-call, Hsinbyushin redeployed his armies from Siam to the Chinese front. The fourth and largest invasion got bogged down at the frontier. With the Qing forces completely encircled, a truce was reached between the field commanders of the two sides in December 1769.
Example Output: After how many Chinese invasions did the conflict escalate from a regional conflict into a major war?

Example Input: Passage: The Packers flew to Denver for a duel with Peyton Manning and the undefeated Denver Broncos. The Broncos wore their alternate blue uniforms with white pants as worn in Super Bowl XXXII. Packers cornerbacks Sam Shields and rookie cornerback Quinten Rollins suffered a shoulder injury in the game and their returns were questionable. The Broncos took the lead early in the first quarter when Ronnie Hillman scored a 1-yard touchdown. In the second quarter, Hillman scored another touchdown and the Broncos led 14-0. The Broncos lead became 17-0 when Brandon McManus made a 50-yard field goal. Von Miller was injured during the second quarter. The Packers struck back when Eddie Lacy scored on a 2-yard touchdown run. They trailed 7-17 at halftime. In the third quarter, the Packers cut Denver's lead to seven when Mason Crosby made a 56-yard field goal. Denver extended their lead to 24-10 when C.J. Anderson made a 28-yard run. Denver continued to dominate when Brandon McManus made a 24-yard field goal and DeMarcus Ware sacked Aaron Rodgers for a safety, making the score 10-29. The Packers defense finally recorded an interception when Damarious Randall picked off Peyton Manning. In this game, the Broncos held Rodgers to 77 yards passing, the lowest of his starting career in a game where he hasn't came off with injury.
Example Output: How long was the longest field goal?

Example Input: Passage: The U.S. Marine Corps issued a request for proposals (RFP) in 2013 for its Humvee sustainment modification initiative to upgrade 6,700 expanded capacity vehicles (ECVs). The Marines plan to field the JLTV, but do not have enough funding to completely replace all Humvees, so they decided to continue sustaining their fleet. Key areas of improvement include upgrades to the suspension to reduce the amount of force transferred to the chassis, upgrading the engine and transmission for better fuel efficiency, enhancements to the cooling system to prevent overheating, a central tire inflation system to improve off-road mobility and ride quality, and increased underbody survivability. Testing of upgraded Humvees was to occur in 2014, with production and installation occurring from 2015 through 2018. Older A2 series Humvees make up half the current fleet, and 4,000 are to be disposed of through foreign military sales and transfers. By 2017, the Marines light tactical vehicle fleet is to consist of 3,500 A2 series Humvees, 9,500 ECV Humvees, and 5,000 JLTVs, with 18,000 vehicles in total. Humvees in service with the Marine Corps will be upgraded through 2030. The Marines shelved the Humvee modernization effort in March 2015 due to budget cuts.
Example Output:
How many of the Marines light tactical vehicle fleet by 2017 will not consist of JLTVs?