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.

[EX Q]: 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.
[EX A]: By how many percent did szlachtas decrease from 1858 to 1897?

[EX Q]: Passage: The Colts began the season on the road against the defending AFC champion Denver Broncos. The Colts began the game on offense, driving down to the Broncos' 36 yard line. However, following a delay of game penalty, they were forced to punt. Peyton Manning led the Broncos' offense on a 16 play drive, but would settle only for a field goal, giving Denver a 3-0 lead. An Andrew Luck interception on the Colts' ensuing offensive possession set the Broncos up at midfield and would lead to a touchdown on a pass from Manning to Julius Thomas to give the Broncos a 10-0 lead. After a three and out from the Colts' offense, Manning and the Broncos again take advantage and drive 83-yard to score on another Thomas touchdown reception. Late in the second quarter, the Broncos again scored on a touchdown pass from Manning to Thomas and extended Denver's lead to 24-0 with two minutes remaining in the half. The Colts put together an 8 play, 80-yard drive to end the half and scored their first points on a 9-yard run from Luck, making the score 24-7 in favor of Denver at halftime. The Broncos' began the second half on offense, though they were eventually forced to punt. After driving into the red zone on their first offensive possession of the half, the Colts' failed to convert a fourth down on the goal line and turned the ball over on downs. The Colts' next offensive possession would again stall in the red zone, with the Colts settling for an Adam Vinatieri field goal, cutting the Bronco lead to 24-10. A 48-yard drive early in the fourth quarter gave the Broncos as 31-10 lead after a Montee Ball touchdown run. The Colts would respond on their next drive with a touchdown pass from Luck to Dwayne Allen, cutting the Broncos' lead down to two scores. The Colts failed to take advantage of a recovered onside kick, after Luck threw an interception in Broncos' territory. After the Colts defense forced a three and out, Luck again drove the Colts down to the goal line, eventually scoring on a touchdown pass to Hakeem Nicks. After again stopping the Broncos' offense, the Colts received the ball with a little under three minutes remaining in the game and a change to tie the game. Though the Colts would drive into Bronco territory, the drive would end after a failed fourth down pass attempt from Luck to Reggie Wayne. With the loss, the Colts began the season with an 0-1 record.
[EX A]: How many points was Denver ahead by at halftime?

[EX Q]: Passage: The Port of Charleston, owned and operated by the South Carolina Ports Authority, is one of the largest ports in the United States, ranked in the top 25 by containerized cargo volume in 2014. It consists of five terminals, and a sixth terminal was to open in 2018. Despite occasional labor disputes, the port is ranked number one in customer satisfaction across North America by supply chain executives. Port activity at the two terminals located in the city of Charleston is one of the city's leading sources of revenue, behind tourism. Today, the Port of Charleston boasts the deepest water in the southeast region and regularly handles ships too big to transit through the Panama Canal. A harbor-deepening project is currently underway to take the Port of Charleston's entrance channel to 54 feet and harbor channel to 52 feet at mean low tide.  With an average high tide of 6 feet, the depth clearances will become 60 feet and 58 feet, respectively. Union Pier, in the city of Charleston, is a cruise ship passenger terminal which hosts numerous cruise departures annually. In May 2010, the Carnival Fantasy was permanently stationed in Charleston, offering weekly cruises to the Bahamas and Key West, eventually to include Bermuda. With the addition of the weekly Carnival Fantasy sailings, Union Terminal hosted 67 embarkations and ports of call in 2010. With the closure of the Naval Base and the Charleston Naval Shipyard in 1996, Detyens, Inc. signed a long term lease.  With three dry docks, one floating dock, and six piers, Detyens Shipyard, Inc. is one of the largest commercial marine repair facilities on the East Coast. Projects include military, commercial, and cruise ships.
[EX A]:
How many feet difference is there between the Port of Charleston's entrance channel and harbor channel?