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: The Liberian economy had relied heavily on the mining of iron ore prior to the civil war. Liberia was a major exporter of iron ore on the world market. In the 1970s and 1980s, iron mining accounted for more than half of Liberia's export earnings. Since the coup d'état of 1980, the country's economic growth rate has slowed down because of a decline in the demand for iron ore on the world market and political upheavals in Liberia. Following a peak in growth in 1979, the Liberian economy began a steady decline due to economic mismanagement following the 1980 coup. This decline was accelerated by the outbreak of civil war in 1989; GDP was reduced by an estimated 90% between 1989 and 1995, one of the fastest declines in history. The United Nations imposed sanctions on Liberia in May 2001 for its support to the rebels of the Revolutionary United Front  in neighboring Sierra Leone. These sanctions have been lifted following elections in 2005. Upon the end of the war in 2003, GDP growth began to accelerate, reaching 9.4% in 2007. The global financial crisis slowed GDP growth to 4.6% in 2009, though a strengthening agricultural sector led by rubber and timber exports increased growth to 5.1% in 2010 and an expected 7.3% in 2011, making the economy one of the 20 fastest growing in the world. In March 2010, Bob Johnson, founder of BET, funded the first hotel constructed in Liberia in 20 years. The 13-acre  luxury resort was built in the Paynesville section of Monrovia. Liberia's external debt was estimated in 2006 at approximately $4.5 billion, 800% of GDP. As a result of bilateral, multilateral and commercial debt relief from 2007 to 2010, the country's external debt fell to $222.9 million by 2011.
Example Output: How many percentage points did the GDP lose between 2007 and 2009?

Example Input: Passage: According to the Stockholm International Peace Research Institute, between 2005-2009 and 2010-2014, Russian exports of major weapons increased by 37 percent; Russia spent $66.4 billion on arms in 2015, then $69.2 billion in 2016, having taken 3rd place (after the U.S. and China).  According to the Russian Defence Ministry, share of modern weapons in the Armed Forces reached from 26 to 48 percent among different kinds of troops in December 2014. This was raised to 30.5–70.7% as of July 2015. The average was 58 per cent over the first half of 2017.
Example Output: Did the share of modern weapons in the Armed Forces increase or decrease between 2014 and 2015?

Example Input: Passage: The Seattle Seahawks kicked off their 2013 campaign with a hard-fought, ugly win over the Carolina Panthers, 12-7. This game marked Russell Wilson's first 300-yard passing game, and Cam Newton's worst career performance, posting 125 yards through the air, a career low. The first quarter ended equal for both teams, as both sides exchanged a couple of punts. Seattle took their third drive of the game in the second quarter, and drove into the red zone, capping it with a Steven Hauschka 27-yard field goal. Carolina responded immediately, and taking advantage of a couple of Seattle penalties, and some big runs by DeAngelo Williams, with Cam Newton hitting Steve Smith for a 3-yard TD. Seattle responded with a drive to around the Carolina 27 yard line, but Charles Godfrey sacked Russell Wilson and stripped the football, which Carolina recovered. So the first half ended 7-3, Carolina. The second half began with a defensive battle between both sides. Seattle then broke the deadlock with a Steven Hauschka 40-yard field goal, on a drive that lasted over 4 minutes, cutting the lead to 7-6. After forcing Carolina to punt midway through the fourth quarter, Seattle's offense produced its finest drive of the day. A couple of Russell Wilson passes, followed by a Robert Turbin 15-yard scamper, set up Seattle at the Panthers' 43 yard line. Russell Wilson overthrew receiver Stephen Williams on first down, but on second down and 10, by using exactly the same play, Wilson connected with second-year man Jermaine Kearse for a 43-yard score, with 10 minutes left to play. They failed the two-point conversion however, so Seattle had a 12-7 lead. Carolina responded by using DeAngelo Williams on some big runs. Inside the Seattle 35 yard line, Williams took off for a 24-yard scamper, and looked like he was going to score, however at the last possible moment, Earl Thomas forced Williams to fumble inside the 10 yard line.
Example Output:
How many more points did Carolina have at the end of the first half?