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: After the Turkish disaster at Vienna in September 1683, Austria and Poland formed an alliance to push the Turks south ). In 1686 Russia joined in ). After the Turks were pushed out of Hungary in 1687 fighting was inconclusive. In the Crimean campaigns of 1687 and 1689 the Russians failed in an attempt to invade Crimea. In 1695 Russia tried to take some forts on the lower Dnieper. By the treaties of 1699/1700 Turkey lost Hungary to Austria, Podolia to Poland and Azov, temporarily, to Russia.

SOLUTION: How many nations allied against Turkey?

PROBLEM: Passage: Trying to snap a three-game losing skid, the Titans went home for a Week 13 AFC South rematch with the Houston Texans. In the first quarter, Tennessee trailed early as Texans RB Ron Dayne got a 1-yard TD run. Afterwards, the Titans responded with RB LenDale White getting a 1-yard TD run. In the second quarter, Houston regained the lead with kicker Kris Brown getting a 45-yard field goal for the only score of the period. In the third quarter, Tennessee took the lead as QB Vince Young completed a 43-yard TD pass to WR Roydell Williams, along with an 11-yard TD pass to WR Justin Gage. In the fourth quarter, the Texans crept closer with QB Sage Rosenfels completing a 28-yard TD pass to WR Andre Johnson. Afterwards, the Titans replied with RB Chris Brown getting a 7-yard TD run. Later, Houston managed to get a 50-yard field goal from Brown. Afterwards, Tennessee's defense help secure the guarantee of their three-game skid coming to an end. With the season-sweeping win, the Titans improved to 7-5. This marked the third-straight year that Tennessee has swept the Texans.

SOLUTION: How many 1-yard touchdown runs were there in the game?

PROBLEM: Passage: William assembled a large invasion fleet and an army gathered from Normandy and all over France, including large contingents from Brittany and Flanders. He mustered his forces at Saint-Valery-sur-Somme and was ready to cross the Channel by about 12 August. The exact numbers and composition of William's force are unknown. A contemporary document claims that William had 726 ships, but this may be an inflated figure. Figures given by contemporary writers are highly exaggerated, varying from 14,000 to 150,000 men. Modern historians have offered a range of estimates for the size of William's forces: 7000-8000 men, 1000-2000 of them cavalry; 10,000-12,000 men; 10,000 men, 3000 of them cavalry; or 7500 men. The army would have consisted of a mix of cavalry, infantry, and archers or crossbowmen, with about equal numbers of cavalry and archers and the foot soldiers equal in number to the other two types combined. Although later lists of companions of William the Conqueror are extant, most are padded with extra names; only about 35 individuals can be reliably claimed to have been with William at Hastings. William of Poitiers states that William obtained Pope Alexander II's consent for the invasion, signified by a papal banner, along with diplomatic support from other European rulers. Although Alexander did give papal approval to the conquest after it succeeded, no other source claims papal support before the invasion. William's army assembled during the summer while an invasion fleet in Normandy was constructed. Although the army and fleet were ready by early August, adverse winds kept the ships in Normandy until late September. There were probably other reasons for William's delay, including intelligence reports from England revealing that Harold's forces were deployed along the coast. William would have preferred to delay the invasion until he could make an unopposed landing.

SOLUTION:
How many men is the difference between the smallest and largest estimates of William's forces?