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.

[Q]: Passage: Mount Vesuvius has erupted many times. The famous eruption in AD 79 was preceded by numerous others in prehistory, including at least three significantly larger ones, the best known being the Avellino eruption around 1800 BC which engulfed several Bronze Age settlements. Since AD 79, the volcano has also erupted repeatedly, in 172, 203, 222, possibly in 303, 379, 472, 512, 536, 685, 787, around 860, around 900, 968, 991, 999, 1006, 1037, 1049, around 1073, 1139, 1150, and there may have been eruptions in 1270, 1347, and 1500. The volcano erupted again in 1631, six times in the 18th century (including 1779 and 1794), eight times in the 19th century (notably in 1872), and in 1906, 1929 and 1944. There have been no eruptions since 1944, and none of the eruptions after AD 79 were as large or destructive as the Pompeian one. Vesuvius entered a new phase in December 1631, when a major eruption buried many villages under lava flows, killing around 3,000 people. Torrents of lahar were also created, adding to the devastation. Activity thereafter became almost continuous, with relatively severe eruptions occurring in 1660, 1682, 1694, 1698, 1707, 1737, 1760, 1767, 1779, 1794, 1822, 1834, 1839, 1850, 1855, 1861, 1868, 1872, 1906, 1926, 1929, and 1944.
[A]: Did Mount Vesuvius erupt more times in the 18th or 19th centuries?

[Q]: Passage: Abortion rates also vary depending on the stage of pregnancy and the method practiced. In 2003, the Centers for Disease Control and Prevention (CDC) reported that 26% of reported legal induced abortions in the United States were known to have been obtained at less than 6 weeks gestation, 18% at 7 weeks, 15% at 8 weeks, 18% at 9 through 10 weeks, 9.7% at 11 through 12 weeks, 6.2% at 13 through 15 weeks, 4.1% at 16 through 20 weeks and 1.4% at more than 21 weeks. 90.9% of these were classified as having been done by "curettage" (Suction-aspiration abortion, dilation and curettage, dilation and evacuation), 7.7% by "medical abortion" means (mifepristone), 0.4% by "instillation abortion" (saline or prostaglandin), and 1.0% by "other" (including hysterotomy abortion and hysterectomy). According to the CDC, due to data collection difficulties the data must be viewed as tentative and some fetal deaths reported beyond 20 weeks may be natural deaths erroneously classified as abortions if the removal of the dead fetus is accomplished by the same procedure as an induced abortion.
[A]: At what ages were the least amount of abortions obtained?

[Q]: Passage: The principal reason for the Ottoman defeat in the fall of 1912 was the decision on part of the Ottoman government to respond to the ultimatum from the Balkan League on 15 October 1912 by declaring war at a time when the Ottoman mobilization ordered on 1 October was only partially complete. At the time of the declaration of war there were 580,000 Ottoman soldiers in the Balkans facing 912,000 soldiers of the Balkan League. The bad condition of the roads together with sparse railroad network had led to the Ottoman mobilization being grossly behind schedule, and many of the commanders were new to their units, having only been appointed on 1 October 1912. The Turkish historian Handan Nezir Akmese wrote the best response when faced with the Balkan League ultimatum on 15 October on the part of the Ottomans would have been to try to stall for time via diplomacy while completing the mobilization instead of declaring war at once. The War Minister Nazim Pasha and the Navy Minister Mahmund Muhtar Pasha had presented over-optimistic pictures of the Ottoman readiness for war to the Cabinet in October 1912 and advised that the Ottoman forces should take the offensive at once at the outbreak of hostilities. By contrast, many senior army commanders were advocating taking the defensive when the war began, arguing that the incomplete mobilization together with serious logistic problems made taking the offensive impossible. Other reasons for the defeat were:.
[A]:
How many days after the Ottoman mobilization was ordered did the Ottomans declare war?