TASK DEFINITION: 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.
PROBLEM: Passage: Since 1999, the overall crime rate of Charleston has declined markedly. The total crime index rate for Charleston in 1999 was 597.1 crimes committed per 100,000 people, while in 2011, the total crime index rate was 236.4 per 100,000.

SOLUTION: How many crimes committed per 100000 people lower was the rate in 2011 versus 1999?

PROBLEM: Passage: In the first four years of the Chávez presidency, the economy grew at first (1999–2001), then contracted from 2001–2003 to GDP levels similar to 1997. At first, the economic decline was due to low oil prices, but it was fueled by the turmoil of the 2002 Venezuelan coup détat attempt and the Venezuelan general strike of 2002–03. Other factors of the decline were an exodus of capital from the country and a reluctance of foreign investors. GDP was 50.0 trillion bolivares in 1998. At the bottom of the recession in 2003, it was 42.4 trillion bolivares (in constant 1998 bolivares). However, GDP rebounded 50.1 trillion bolivares with a calmer political situation in 2004 and rose to 66.1 trillion bolivares in 2007 (both in constant 1998 bolivares).

SOLUTION: Was the GDP larger in 1998 or in 2003?

PROBLEM: Passage: Air temperature is stable over the year at 26 °C in February and 27 °C in August. Precipitation is as high as 3,000 mm/year and mostly occurs in summer. Sea currents are south-easterly and easterly in winter and south-westerly and westerly in summer. The average surface water temperature is 26-28 °C in February and 29 °C in May. The water temperature is constant at 4.8 °C at the depths of 1,600 m and below. Salinity is 31.5-32.5‰  in summer and 30.0-33.0‰ in winter in the southern part. In the northern part, it decreases to 20-25‰ due to the inflow of fresh water from the Irrawaddy River. Tides are semidiurnal  with an amplitude of up to 7.2 meters.

SOLUTION:
At it's lowest average surface temperature in February, how many degrees C warmer is it in May?