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: In 1611 a Swedish expeditionary corps under Jacob De la Gardie captured Novgorod. The Novgorodians asked the Swedish king to install one of his sons — Carl Filip or Gustavus Adolphus — as their monarch. In the meantime, Gustavus Adolphus succeeded to the Swedish throne. The young king decided to press his brother's claim to the Russian throne even after the Poles had been expelled from Moscow by a patriotic uprising of 1612 and Mikhail Romanov had been elected a new tsar. While the Swedish statesmen envisaged the creation of a Trans-Baltic dominion extending northwards to Archangelsk and eastwards to Vologda, De la Gardie and other Swedish soldiers, still holding Novgorod and Ingria, saw the war as a reaction for their forces not receiving payment for their succour during the De la Gardie Campaign. In 1613 they advanced towards Tikhvin and laid a siege to the city, but were repelled. The Russian counter-offensive failed to regain Novgorod, however. The Russian tsar refused to commit his troops to battle and the war lumbered on until 1614, when the Swedes captured Gdov. The following year they laid siege to Pskov but Russian generals Morozov and Buturlin held their own until 27 February 1617, when the Treaty of Stolbovo stripped Russia of its access to the Baltic Sea and awarded to Sweden the province of Ingria with the townships of Ivangorod, Jama, Koporye and Noteborg. Novgorod and Gdov were to be restituted to Russia. As a result of the war, Russia was denied access to the Baltic sea for about a century, despite its persistent efforts to reverse the situation. This led to the increased importance of Arkhangelsk for its trading connections with Western Europe.

SOLUTION: After the first attack in 1613 how many years passed before the Treaty of Stolbovo was signed?

PROBLEM: 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%.

SOLUTION: How many fewer robberies were reported to the New York City Police Department in 2010 than in 2000?

PROBLEM: Passage: Persia attempted to ratify the Treaty of Constantinople , by demanding that the Ja'fari, also known as the Imamiyyah was to be accepted as a fifth legal sect of Islam. In 1743, Nader Shah declared war on the Ottoman Empire. He demanded the surrender of Baghdad. The Persians had captured Baghdad in 1623 and Mosul in 1624, but the Ottomans had recaptured Mosul in 1625 and Bagdad in 1638. The Treaty of Zuhab in 1639 between the Ottoman Empire and the Safavid Empire had resulted in peace for 85 years. After the fall of the Safavid Dynasty, Russia and the Ottoman Empire agreed to divide the northwest and the Caspian region of Persia, but with the advent of Nader Shah, the Russians and the Turks withdrew from the region. Nader Shah waged war against the Ottomans from 1730 to 1736 but it ended with a stalemate. Nader Shah afterwards turned east and declared war on the Moghul Empire and invaded India, in order to refund his wars against the Ottomans.

SOLUTION:
For how many years consecutively did the Ottomans have Baghdad for before Nader Shah declared war with them and demanded the surreneder of Baghdad?