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.

[EX Q]: Passage: With the end of the "crack epidemic" in the mid-1990s and with the initiation of aggressive policing under mayors David Dinkins and subsequently  Rudolph Giuliani, crime in Harlem plummeted. In 1981, 6,500 robberies were reported in Harlem; robberies dropped to 4,800 in 1990 during David Dinkins mayoralty. By 2000, only 1,700 robberies were reported, and by 2010, only 1,100 were reported. There have been similar changes in all categories of crimes tracked by the New York City Police Department. In the 32nd Precinct, which services Central Harlem above 127th Street, for example, between 1990 and 2013, the murder rate dropped 89.4%, the rape rate dropped 67.5%, the robbery rate dropped 74.2%, burglary dropped 93.4%, and the total number of crime complaints dropped 77.6%.
[EX A]: How many fewer robberies were reported to the New York City Police Department in 2010 than in 2000?

[EX Q]: Passage: The Dolphins began their 2007 campaign on the road against the Washington Redskins. After a scoreless first quarter, the Redskins made the first move with kicker Shaun Suisham getting a 31-yard field goal three minutes into the second quarter. Miami took the lead before the end of the half with a one-yard touchdown pass from Trent Green to tight end Justin Peelle as time expired. Washington took a 10-7 lead on a 19-yard Clinton Portis touchdown run with just under 12 minutes remaining in the third quarter.  Dolphins kicker Jay Feely tied the game at 10 later in the quarter on a 20-yard field goal, and each team notched another field goal in the fourth quarter. With four seconds remaining and the ball on the Washington 43-yard line, Redskins quarterback Jason Campbell launched a last-second Hail Mary pass that was batted by Dolphins defensive end Jason Taylor in the end zone. Redskins wide receiver Antwaan Randle El caught the ball at the six but was tackled at the three-yard line before he could score the winning touchdown. The Redskins won the coin toss to begin overtime and promptly mounted a 10-play, 62-yard drive that included just two passes. Suisham made his third field goal of the game, this time from 39 yards out, to win the game 16-13 and hand Miami their first loss of the season as they started out 0-1 and 0-1 against NFC Opponents.
[EX A]: How many field goals did both teams score in the fourth quarter?

[EX Q]: Passage: Following the withdrawal of the SNA, the WSLF continued their insurgency. By May 1980, the rebels, with the assistance of a small number of SNA soldiers who continued to help the guerrilla war, controlled a substantial region of the Ogaden. However, by 1981 the insurgents were reduced to sporadic hit-and-run attacks and were finally defeated. In addition, the WSLF and SALF were significantly weakened after the Ogaden War. The former was practically defunct by the late 1980s, with its splinter group, the Ogaden National Liberation Front  operating from headquarters in Kuwait. Even though elements of the ONLF would later manage to slip back into the Ogaden, their actions had little impact. For the Barre regime, the invasion was perhaps the greatest strategic blunder since independence, and it weakened the military. Almost one-third of the regular SNA soldiers, three-eighths of the armored units and half of the Somali Air Force  were lost. The weakness of the Barre administration led it to effectively abandon the dream of a unified Greater Somalia. The failure of the war aggravated discontent with the Barre regime; the first organized opposition group, the Somali Salvation Democratic Front , was formed by army officers in 1979. The United States adopted Somalia as a Cold War ally from the late 1970s to 1988 in exchange for use of Somali bases, and a way to exert influence upon the region. A second armed clash in 1988 was resolved when the two countries agreed to withdraw their militaries from the border.
[EX A]:
How many years after the formation of the Somali Salvation Democratic Front did the second armed clash occur?