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.
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Question: Passage: When the war started, John II had been King of Navarre since 1425 through his first wife, Blanche I of Navarre, who had married him in 1420. When Blanche died in 1441, John retained the government of her lands and dispossessed his own eldest son, Charles , who was made Prince of Viana in 1423. John tried to assuage his son with the lieutenancy of Navarre, but his son's French upbringing and French allies, the Beaumonteses, brought the two into conflict. In the early 1450s they were engaged in open warfare in Navarre. Charles was captured and released; and John tried to disinherit him by illegally naming his daughter Eleanor, who was married to Gaston IV of Foix, his successor. In 1451 John's new wife, Juana Enríquez, gave birth to a son, Ferdinand. In 1452 Charles fled his father first for France, later for the court of his uncle, John's elder brother, Alfonso V at Naples. From 1454 John governed his brother's Spanish realms—the Crown of Aragon—as lieutenant. When Alfonso died in 1458, Charles was arrested and brought to Majorca. John succeeded Alfonso as ruler of the Crown of Aragon. In his will John named Charles as his heir. Among John's early unpopular acts was to quit the war against Genoa, upsetting the merchants of Barcelona. He also refused to aid his nephew, Ferdinand I of Naples, in securing his throne.

Answer: How many years after Blanche died did John II have his son Ferdinand?


Question: Passage: Coordinates: 18°20′N 64°44′W﻿ / ﻿18.333°N 64.733°W﻿ / 18.333; -64.733 The 1733 slave insurrection on St. John in the Danish West Indies  started on November 23, 1733, when 150 African slaves from Akwamu  revolted against the owners and managers of the island's plantations. Lasting several months into August 1734, the slave rebellion was one of the earliest and longest slave revolts in the Americas. The Akwamu slaves captured the fort in Coral Bay and took control of most of the island. They intended to resume crop production under their own control and use Africans of other tribes as slave labor. Planters regained control by the end of May 1734, after the Akwamu were defeated by several hundred better-armed French and Swiss troops sent in April from Martinique, a French colony. Colony militia continued to hunt down maroons and finally declared the rebellion at an end in late August 1734.

Answer: How many months after the influx of French and Swiss troops did Planters regain control?


Question: Passage: Despite these barriers to access, health services have shown a trend toward improvement over the past twenty years. Child immunizations against such diseases as hepatitis B, diphtheria and measles increased an average of 60 percent in this period, indicating low but increasing availability of basic medical services and treatments. The Malagasy fertility rate in 2009 was 4.6 children per woman, declining from 6.3 in 1990. Teen pregnancy rates of 14.8 percent in 2011, much higher than the African average, are a contributing factor to rapid population growth. In 2010 the maternal mortality rate was 440 per 100,000 births, compared to 373.1 in 2008 and 484.4 in 1990, indicating a decline in perinatal care following the 2009 coup. The infant mortality rate in 2011 was 41 per 1,000 births, with an under-five mortality rate at 61 per 1,000 births. Schistosomiasis, malaria and sexually transmitted diseases are common in Madagascar, although infection rates of AIDS remain low relative to many countries in mainland Africa, at only 0.2 percent of the adult population. The malaria mortality rate is also among the lowest in Africa at 8.5 deaths per 100,000 people, in part due to the highest frequency use of insecticide treated nets in Africa. Adult life expectancy in 2009 was 63 years for men and 67 years for women.

Answer:
How many did maternal mortality rate increase from 2008 to 2010?