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 their ouster from the coastal ports of China, Japanese and Portuguese traders collaborated with illegal smugglers on island ports along the Zhejiang and Fujian coast. Among these ports, Shuangyu on Liuheng Island  off the coast of Ningbo emerged as the primary emporium of clandestine trade. At first, Shuangyu only had temporary mat-sheds for the smugglers to house themselves and their goods during the trading season. In 1539, Fujianese traders started to guide foreign traders from Patani and Malacca to barter in Shuangyu and started to occupy the island. They were soon joined by the Fujianese merchants Jinzi Lao  and Li Guangtou , who led the Portuguese and assorted adventurers to Shuangyu. Attracted by the growing trade on the Zhejiang coast, the Xu brothers' syndicate moved their base of operations from the Malay Peninsula to Shuangyu. The existing clout of the Xu syndicate and its close partnership with the Portuguese made it the foremost smuggling bloc by 1542 after a series of mergers among the merchant-pirates in Shuangyu. The Ming navy began to clamp down on smuggling activities in 1543, but the Xu syndicate was able to repulse the Ming attacks in Shuangyu with the aid of Portuguese firepower. Hardened by their victories against the Ming navy, the smugglers expanded their network of activities down the coast of China all the way to Guangdong and inland to the metropolis of Nanjing, with Shuangyu being their hub. In 1544, this network was further expanded when Wang Zhi joined the Xu syndicate, bringing along his Japanese connections to Shuangyu. Thus Shuangyu reached its zenith as the biggest entrepôt in maritime East Asia trading goods from Europe and Asia until its downfall in 1548.

SOLUTION: After the Ming navy began trying to stop smuggling in 1543, how many years passed before the Xu syndicate downfall?

PROBLEM: Passage: The Easter Rising lasted from Easter Monday 24 April 1916 to Easter Saturday 29 April 1916. Annual commemorations, rather than taking place on 24-29 April, are typically based on the date of Easter, which is a moveable feast. For example, the annual military parade is on Easter Sunday; the date of coming into force of  the Republic of Ireland Act 1948 was symbolically chosen as Easter Monday  1949. The official programme of centenary events in 2016 climaxed from 25 March  to 2 April  with other events earlier and later in the year taking place on the calendrical anniversaries.

SOLUTION: How many days did the Easter Rising last for?

PROBLEM: Passage: Hoping to rebound from their road loss to the Jets and save their season, the Vikings went home for a Week 6 duel with the Dallas Cowboys, in a rematch of last year's Divisional Playoff game, won 34-3 by the Vikings. Minnesota trailed in the first quarter as Cowboys quarterback Tony Romo completed a 15-yard touchdown pass to wide receiver Roy Williams. The Vikings answered with quarterback Brett Favre finding wide receiver Greg Camarillo on a 10-yard touchdown pass. Dallas struck back in the second quarter as Romo found Williams again on a 2-yard touchdown pass. Minnesota took the lead in the third quarter as wide receiver Percy Harvin returned the half's opening kickoff 95 yards for a touchdown, followed by a 1-yard touchdown run from running back Adrian Peterson. The Cowboys tied the game in the fourth quarter as Romo threw a 31-yard touchdown pass to wide receiver Dez Bryant. Afterwards, the Vikings closed out the game as kicker Ryan Longwell booted a 38-yard field goal.

SOLUTION:
How long was the game's kickoff returned for?