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.

Passage: The Russians advance into the Polish-Lithuanian Commonwealth led to the kingdom of Sweden invading Poland in 1655 under King Charles X. Afanasy Ordin-Nashchokin then opened negotiations with the Poles and signed an armistice, Truce of Vilna, on 2 November. After that, Russian forces marched on Swedish Livonia and besieged Riga in the Russo-Swedish War of 1656-1658, a theater of the Second Northern War. Khmelnytsky was not against this temporary truce and supported the Tsar though he warned him of Polish furtiveness. Ivan Vyhovsky, the newly elected hetman in 1657 upon the death of Khmelnytsky, allied himself with the Poles in Sept. 1658, creating the Grand Duchy of Ruthenia.  However, the Cossacks were also beset with the start of a civil war with this Commonwealth treaty and a new Treaty of Pereyaslav with Russia in 1659. The Tsar concluded with Sweden the advantageous Treaty of Valiersar, which allowed him to resume hostilities against the Poles in October 1658, capturing Wincenty Gosiewski at the Battle of Werki.  In the north, Sapieha's attempt to blockade Vilnius was checked by Prince Yury Dolgorukov  on October 11. In the south, the Ukrainian Vyhovsky failed to wrest Kiev from Sheremetev's control where Russians kept their garrison. In July 1659, however, Vyhovsky and his Crimean Tatar allies inflicted a heavy defeat upon Trubetskoy's army, then besieging Konotop.
How many years did the Russo-Swedish War last?

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.
By how many percent did szlachtas decrease from 1858 to 1897?

Passage: In 1895, members of the Gloucestershire Engineer Volunteers reenacted their famous stand at Rorke's Drift, 18 years earlier. 25 British soldiers beat back the attack of 75 Zulus at the Grand Military Fete at the Cheltenham Winter Gardens. Veterans of the American Civil War recreated battles as a way to remember their fallen comrades and to teach others what the war was all about. The Great Reunion of 1913, celebrating the 50th anniversary of the Battle of Gettysburg, was attended by more than 50,000 Union and Confederate veterans, and included reenactments of elements of the battle, including Pickett's Charge. During the early twentieth century, historical reenactment became very popular in Russia with reenactments of the Siege of Sevastopol  , the Battle of Borodino  in St Petersburg and the Taking of Azov  in Voronezh in 1918. In 1920, there was a reenactment of the 1917 Storming of the Winter Palace on the third anniversary of the event. This reenactment inspired the scenes in Sergei Eisenstein's film October: Ten Days That Shook the World. Large scale reenactments began to be regularly held at the Royal Tournament, Aldershot Tattoo in the 1920s and 30s. A spectacular recreation of the Siege of Namur, an important military engagement of the Nine Years' War, was staged in 1934 as part of 6-day long show. In America, modern reenacting is thought to have begun during the 1961-1965 Civil War Centennial commemorations. After more than 6,000 reenactors participated in a 125th anniversary event near the original Manassas battlefield, reenacting grew in popularity during the late 1980s and 1990s, and there are today over a hundred Civil War reenactments held each year throughout the country.

By how many men were the British sodiers outnumbered by the Zulus?