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.

Example Input: Passage: In the 1840s Nicholas I of Russia reduced 64,000 szlachta to commoner status. Despite this, 62.8% of Russias nobles were szlachta in 1858 and still 46.1% in 1897. Serfdom was abolished in Russian Poland on February 19, 1864. It was deliberately enacted in a way that would ruin the szlachta. It was the only area where peasants paid the market price in redemption for the land (the average for the empire was 34% above the market price). All land taken from Polish peasants since 1846 was to be returned without redemption payments. The ex-serfs could only sell land to other peasants, not szlachta. 90% of the ex-serfs in the empire who actually gained land after 1861 were in the 8 western provinces. Along with Romania, Polish landless or domestic serfs were the only ones to be given land after serfdom was abolished. All this was to punish the szlachtas role in the uprisings of 1830 and 1863. By 1864 80% of szlachta were déclassé (downward social mobility),  petty nobles were worse off than the average serf, 48.9% of land in Russian Poland was in peasant hands, nobles still held 46%. In the Second Polish Republic the privileges of the nobility were lawfully abolished by the March Constitution (Poland) in 1921 and as such not granted by any future Poland law.
Example Output: By how many percent did szlachtas decrease from 1858 to 1897?

Example Input: Passage: As of the census of 2000, there were 18,812 people, 7,402 households, and 5,477 families residing in the county.  The population density was 55 people per square mile (21/km²).  There were 10,319 housing units at an average density of 30 per square mile (12/km²).  The racial makeup of the county was 51.45% Race (United States Census), 41.90% Race (United States Census) or Race (United States Census), 0.20% Race (United States Census), 0.66% Race (United States Census), 0.04% Race (United States Census), 0.82% from Race (United States Census), and 0.92% from two or more races.  2.16% of the population were Race (United States Census) or Race (United States Census) of any race.
Example Output: How many households and families are in the county according to the census?

Example Input: Passage: Bangkok is one of the worlds top tourist destinations. Of 162 cities worldwide, MasterCard ranked Bangkok as the top destination city by international visitor arrivals in its Global Destination Cities Index 2018, ahead of London, with just over 20 million overnight visitors in 2017. This was a repeat of its 2017 ranking (for 2016). Euromonitor International ranked Bangkok fourth in its Top City Destinations Ranking for 2016. Bangkok was also named "Worlds Best City" by Travel + Leisure magazines survey of its readers for four consecutive years, from 2010 to 2013. As the main gateway through which visitors arrive in Thailand, Bangkok is visited by the majority of international tourists to the country. Domestic tourism is also prominent. The Department of Tourism recorded 26,861,095 Thai and 11,361,808 foreign visitors to Bangkok in 2010. Lodgings were made by 15,031,244 guests, who occupied 49.9 percent of the citys 86,687 hotel rooms. Bangkok also topped the list as the worlds most popular tourist destinations in 2017 rankings.
Example Output:
How many Thai and other foreign visitors to Bangkok were there in 2010?