Problem: Tibet:

The atmosphere is severely dry nine months of the year, and average annual snowfall is only 18 inches (46 cm), due to the rain shadow effect. Western passes receive small amounts of fresh snow each year but remain traversible all year round. Low temperatures are prevalent throughout these western regions, where bleak desolation is unrelieved by any vegetation bigger than a low bush, and where wind sweeps unchecked across vast expanses of arid plain. The Indian monsoon exerts some influence on eastern Tibet. Northern Tibet is subject to high temperatures in the summer and intense cold in the winter.

What weather pattern exerts some influence on eastern TIbet?
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A: Indian monsoon


Problem: In 1840, a British naval station established to suppress the African slave trade was based on the island, and between 1840 and 1849 over 15,000 freed slaves, known as "Liberated Africans", were landed there.
Who established a naval station to cut down on African slave trade on the island in 1840?
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Answer: British


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Some of the leading art groups of China are based in Nanjing; they include the Qianxian Dance Company, Nanjing Dance Company, Jiangsu Peking Opera Institute and Nanjing Xiaohonghua Art Company among others.
What art company is based in Nanjing?
A: Nanjing Xiaohonghua Art Company


Context and question: The Republic of the United Provinces lasted until a series of republican revolutions in 1783–1795 created the Batavian Republic. During this period, republican forces took several major cities of the Netherlands. After initially fleeing, the monarchist forces came back with British, Austrian, and Prussian troops and retook the Netherlands. The republican forces fled to France, but then successfully re-invaded alongside the army of the French republic. After the French Republic became the French Empire under Napoleon, the Batavian Republic was replaced by the Napoleonic Kingdom of Holland.
What Kingdom replaced the monarchist forces under Napoleon?
Answer: unanswerable


Question: On his mother's side, Hayek was second cousin to the philosopher Ludwig Wittgenstein. His mother often played with Wittgenstein's sisters, and had known Ludwig well. As a result of their family relationship, Hayek became one of the first to read Wittgenstein's Tractatus Logico-Philosophicus when the book was published in its original German edition in 1921. Although Hayek met Wittgenstein on only a few occasions, Hayek said that Wittgenstein's philosophy and methods of analysis had a profound influence on his own life and thought. In his later years, Hayek recalled a discussion of philosophy with Wittgenstein, when both were officers during World War I. After Wittgenstein's death, Hayek had intended to write a biography of Wittgenstein and worked on collecting family materials; and he later assisted biographers of Wittgenstein.
Is there an answer to this question: Who was among the first readers of Ludwig  Wittgenstein's book?

Answer: Hayek


Problem: Asphalt:

About 40,000,000 tons were produced in 1984[needs update]. It is obtained as the "heavy" (i.e., difficult to distill) fraction. Material with a boiling point greater than around 500 °C is considered asphalt. Vacuum distillation separates it from the other components in crude oil (such as naphtha, gasoline and diesel). The resulting material is typically further treated to extract small but valuable amounts of lubricants and to adjust the properties of the material to suit applications. In a de-asphalting unit, the crude asphalt is treated with either propane or butane in a supercritical phase to extract the lighter molecules, which are then separated. Further processing is possible by "blowing" the product: namely reacting it with oxygen. This step makes the product harder and more viscous.

What is material with a boiling point over 200 degrees Celsius considered?
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A:
unanswerable