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 Panthers came into the game hoping to avenge their loss to the Saints two weeks prior, with the winner taking first place in the NFC South. In the second quarter, a strong rain blanketed the stadium, reminiscent of a similar storm in 2011 against Jacksonville. New Orleans scored late to go up 13-10 with under 2 minutes to play. Cam Newton led the offense down the field and into the red zone on the following possession. With under a minute to play, Newton threw the game-winning touchdown pass to receiver Domenik Hixon, who was replacing an injured Steve Smith. It was later reported the stadium's press box shook when Hixon caught the touchdown. Carolina's defense was able to prevent the Saints from completing a last-second Hail Mary. With the win, the Panthers clinched a playoff spot and improved to 11-4. The team also improved to 9-18 when Newton turns the ball over.
Example Output: How many games had the Panthers won before this game?

Example Input: Passage: Statistics on freight are specified in terms of the weight of freight lifted, and the net tonne kilometre, being freight weight multiplied by distance carried. 116.6 million tonnes of freight was lifted in the 2013&ndash;4 period, against 138 million tonnes in 1986&ndash;7, a decrease of 16%. However, a record 22.7 billion net tonne kilometres (14 billion net ton miles) of freight movement were recorded in 2013-4, against 16.6 billion (10.1 billion) in 1986&ndash;7, an increase of 38%. Coal makes up 36% of the total net tonne kilometre, though its share is declining. Rail freight has increased its market share since privatisation (by net tonne kilometres) from 7.4% in 1998 to 11.1% in 2013. Recent growth is partly due to more international services including the Channel Tunnel and Port of Felixstowe, which is containerised. Nevertheless, network bottlenecks and insufficient investment in catering for 9 6" high shipping containers restrict growth.
Example Output:
How many fewer millions of tonnes of freight was lifted in 2013-14 than in 1986-87?