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.

Passage: Over the years the city has been home to people of various ethnicities, resulting in a range of different traditions and cultural practices. In one decade, the population increased from 427,045 in 1991 to 671,805 in 2001. The population was projected to reach 915,071 in 2011 and 1,319,597 by 2021. To keep up this population growth, the KMC-controlled area of  has expanded to  in 2001. With this new area, the population density which was 85 in 1991 is still 85 in 2001; it is likely to jump to 111 in 2011 and 161 in 2021.
How many more people populated the city in 2001 than in 1991?

Passage: In 1860s, the relations between Qatar and Bahrain deteriorated with a series of small disputes. Hostilities emerged when, in 1867, Bahrain arrested a Qatari Bedouin in the Qatari mainland and deported him to Bahrain. In response, the Qataris, led by the Naim tribe, defeated the Bahraini army that was based on the peninsula, effectively expelling them. These tensions led Bahrain, allied with Abu Dhabi, to attack Qatar. The conflict failed to pacify and resulted in an escalation between the two parties in the following year. In October 1867, the Bahraini Hakim Mohammed al Khalifa, sent his brother, Ali Al Khalifa, with a force of 500 men in 24 boats to attack Qatar. He was joined by a force of 200 men under Ahmed al Khalifa. Additionally, Bahrain's ally Abu Dhabi sent 2,000 troops in 70 boats. The attack on Qatar led to the sacking of Bida  and Wakra. A British record later stated "that the towns of Doha and Wakrah were, at the end of 1867 temporarily blotted out of existence, the houses being dismantled and the inhabitants deported". A Qatari counterattack followed the next year, resulting in the destruction of most of the Bahraini naval vessels deployed. The 1868 attack resulted in some 1,000 individuals killed and 60 ships destroyed.
How many men did Ali Al Khalifa have under his command?

Passage: The Giants again found themselves trailing the winless Dolphins entering the fourth quarter. New York was down 17-10 behind two rushing touchdowns, one by wildcat quarterback Steve Slaton and the other by starter Matt Moore, and a Dan Carpenter field goal. Lawrence Tynes recorded a field goal of his own while Eli Manning threw a touchdown to Mario Manningham in the second quarter. After Tynes recorded his second field goal in the fourth, Manning found Victor Cruz for a 25-yard touchdown with 2:30 left to give the Giants the victory. Cruz recorded 99 yards on seven receptions while Manning threw for 349 yards and two touchdowns. Reggie Bush led all runners with 103 yards and Moore threw for 138 and an interception.

How many points were the Giants behind the Dolphins at the start of the 4th quarter?