Problem: Catalan language:

With the union of the crowns of Castille and Aragon (1479), the use of Spanish gradually became more prestigious. Starting in the 16th century, Catalan literature experienced a decline, the language came under the influence of Spanish, and the urban and literary classes became bilingual.

When did Catalan literature begin a downward trend?
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A: 16th century


Problem: Alps:

The Alps provide lowland Europe with drinking water, irrigation, and hydroelectric power. Although the area is only about 11 percent of the surface area of Europe, the Alps provide up to 90 percent of water to lowland Europe, particularly to arid areas and during the summer months. Cities such as Milan depend on 80 percent of water from Alpine runoff. Water from the rivers is used in over 500 hydroelectricity power plants, generating as much as 2900 kilowatts of electricity.

How much water does the Alps provide to lowland Europe?
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A: 90 percent


Problem: Namibia:

Life expectancy at birth is estimated to be 52.2 years in 2012 – among the lowest in the world. The AIDS epidemic is a large problem in Namibia. Though its rate of infection is substantially lower than that of its eastern neighbour, Botswana, approximately 13.1% of the adult population is[update] infected with HIV. In 2001, there were an estimated 210,000 people living with HIV/AIDS, and the estimated death toll in 2003 was 16,000. According to the 2011 UNAIDS Report, the epidemic in Namibia "appears to be leveling off." As the HIV/AIDS epidemic has reduced the working-aged population, the number of orphans has increased. It falls to the government to provide education, food, shelter and clothing for these orphans.

How many orphans are there in Namibia?
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A: unanswerable


Problem: Dialect:

Modern Nationalism, as developed especially since the French Revolution, has made the distinction between "language" and "dialect" an issue of great political importance. A group speaking a separate "language" is often seen as having a greater claim to being a separate "people", and thus to be more deserving of its own independent state, while a group speaking a "dialect" tends to be seen not as "a people" in its own right, but as a sub-group, part of a bigger people, which must content itself with regional autonomy.[citation needed] The distinction between language and dialect is thus inevitably made at least as much on a political basis as on a linguistic one, and can lead to great political controversy, or even armed conflict.

What political arrangement is associated with being a dialect-speaking sub-group?
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A:
regional autonomy