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: Obesity is one of the leading preventable causes of death worldwide. A number of reviews have found that mortality risk is lowest at a BMI of 20–25 kg/m2 in non-smokers and at 24–27 kg/m2 in current smokers, with risk increasing along with changes in either direction. This appears to apply in at least four continents. In contrast, a 2013 review found that grade 1 obesity (BMI 30–35) was not associated with higher mortality than normal weight, and that overweight (BMI 25–30) was associated with "lower" mortality than was normal weight (BMI 18.5–25). Other evidence suggests that the association of BMI and waist circumference with mortality is U- or J-shaped, while the association between waist-to-hip ratio and waist-to-height ratio with mortality is more positive. In Asians the risk of negative health effects begins to increase between 22–25 kg/m2. A BMI above 32 kg/m2 has been associated with a doubled mortality rate among women over a 16-year period. Obesity in the United States, obesity is estimated to cause 111,909 to 365,000 deaths per year, while 1 million (7.7%) of deaths in Europe are attributed to excess weight.  On average, obesity reduces life expectancy by six to seven years, a BMI of 30–35 kg/m2 reduces life expectancy by two to four years, while severe obesity (BMI > 40 kg/m2) reduces life expectancy by ten years.
Example Output: What BMI reduces life expectancy for ten years, BMI of 30–35 kg/m2 or BMI > 40 kg/m2?

Example Input: Passage: The Raiders stayed on the East Coast following the loss to the Bills to take on the Miami Dolphins on Sunday Night Football. Once again, the Raiders started well, driving 58 yards on 12 plays before stalling and settling for a field goal for an early 3-0 lead. Following punts by both team, the Dolphins pass offense carved up the Raiders dinged-up secondary, going 82 yards on 10 play as Jay Cutler hit Damien Williams for a 10-yard touchdown. The extra point hit the upright and the Dolphins led 6-3. The Dolphins attempted an onside kick on the ensuing kickoff which they recovered. Four plays later, inside the Raider 25 yard line, Kenyan Drake fumbled the ball to end the Dolphins' drive. The Raiders quickly answered as Derek Carr hit speedster Johnny Holton on a 44-yard bomb to the end zone to give the Raiders a 10-6 lead with just over three minutes remaining in the half. The Dolphins moved quickly down the field, but were stopped at the Raider 31 and settled for a field goal to reduce the lead to one point. With just over 30 seconds remaining, The Raider offense moved 42 yards on five plays to set up Giorgio Tavecchio's 53-yard field goal as time expired. At the half, the Raiders led 13-9. In the second half, the Raiders forced the Dolphins to punt on their first possession and the Raider offense took over. Moving 67 yards on six plays, Marshawn Lynch capped the drive with a 22-yard touchdown run to push the Raider lead to 20-9. Miami would not give in, answering on their next drive as Cutler hit Jarvis Landry for a six-yard scored to cut the lead to four again. The teams' defenses took over as they each forced a fumble before Ndamukong Suh forced a Carr fumble to give the Dolphins the ball near midfield. However, the Raider defense forced another punt. Following punts from both teams, Oakland took over at their own 13 with 7:21 left in the game. Six plays later, Lynch bowled his way into the end zone from three yards out to appear to put the game away at 27-16 with four and a half minutes remaining. Miami would turn the ball over on downs at midfield with under three minutes remaining as the game again appeared to be over. However, Carr was intercepted on third down and the Phins moved down the field, moving 83 yards and scoring on a 15-yard pass from Cutler to Julius Thomas with 1:32 remaining. The two-point conversion was good as the lead was narrowed to 27-24. Miami's onside kick was recovered by Amari Cooper and the Raiders were able to kneel out the clock for the 27-24 win. Carr threw for 300 yards with a touchdown and interception. Marshawn Lynch scored twice and Jared Cook had a big day with eight receptions for 126 yards. The Raiders were out-gained 395-379 as both teams had over 100 yards in penalties in the sloppy game. The win moved the Raiders to 4-5 on the season heading into their bye week.
Example Output: How many points ahead were the Raiders before the end of the second quarter?

Example Input: Passage: J.T. Kearns (for whom the village was named) staked a claim in 1907, which became the Chesterfield Gold Mines (1938-1952).  An 854-metre shaft mining connected 20 levels, and its 500-ton stamp mill produced a total of 458,880 ounces of gold.  Virginiatown and North Virginiatown were built to house the Kerr Addison workers.  Kerr Addison Gold mines started in 1936, and employed 1,456 people by 1959.  Annual production was 500,000 ounces of gold from 1957 to 1961, and in 1960, produced the most gold in the Western Hemisphere.  The 10,000,000th ounce of gold was produced in 1982.  However, production reduced to 47,211 ounces in 1984 from a workforce of 329.  The renamed Kerr Mine produced 15,350 ounces in 1993, and 22,000 ounces in 1994.
Example Output:
How many more ounces did the Kerr Mine produce in 1994 compared to 1993?