Problem: United Nations Population Fund:

Rep. Christopher H. Smith (R-NJ), criticized the State Department investigation, saying the investigators were shown "Potemkin Villages" where residents had been intimidated into lying about the family-planning program. Dr. Nafis Sadik, former director of UNFPA said her agency had been pivotal in reversing China's coercive population control methods, but a 2005 report by Amnesty International and a separate report by the United States State Department found that coercive techniques were still regularly employed by the Chinese, casting doubt upon Sadik's statements.

The representative said that inspectors had never seen what sort of villages?
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A: unanswerable

Problem: Uranium is used as a colorant in uranium glass producing orange-red to lemon yellow hues. It was also used for tinting and shading in early photography. The 1789 discovery of uranium in the mineral pitchblende is credited to Martin Heinrich Klaproth, who named the new element after the planet Uranus. Eugene-Melchior Peligot was the first person to isolate the metal and its radioactive properties were discovered in 1896 by Henri Becquerel. Research by Otto Hahn, Lise Meitner, Enrico Fermi and others, such as J. Robert Oppenheimer starting in 1934 led to its use as a fuel in the nuclear power industry and in Little Boy, the first nuclear weapon used in war. An ensuing arms race during the Cold War between the United States and the Soviet Union produced tens of thousands of nuclear weapons that used uranium metal and uranium-derived plutonium-239. The security of those weapons and their fissile material following the breakup of the Soviet Union in 1991 is an ongoing concern for public health and safety. See Nuclear proliferation.
Who discovered that uranium was radioactive?
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Answer: Henri Becquerel

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Paris was in its artistic prime in the 19th century and early 20th century, when it had a colony of artists established in the city and in art schools associated with some of the finest painters of the times: Manet, Monet, Berthe Morisot, Gauguin, Renoir and others. The French Revolution and political and social change in France had a profound influence on art in the capital. Paris was central to the development of Romanticism in art, with painters such as Gericault. Impressionism, Art Nouveau, Symbolism, Fauvism Cubism and Art Deco movements all evolved in Paris. In the late 19th century, many artists in the French provinces and worldwide flocked to Paris to exhibit their works in the numerous salons and expositions and make a name for themselves. Artists such as Pablo Picasso, Henri Matisse, Vincent van Gogh, Paul Cezanne, Jean Metzinger, Albert Gleizes, Henri Rousseau, Marc Chagall, Amedeo Modigliani and many others became associated with Paris. Picasso, living in Montmartre, painted his famous La Famille de Saltimbanques and Les Demoiselles d'Avignon between 1905 and 1907. Montmartre and Montparnasse became centres for artistic production.
What type of art did Paris help develop with painters like Gericault?
A: Romanticism

Context and question: In recent years a number of well-known tourism-related organizations have placed Greek destinations in the top of their lists. In 2009 Lonely Planet ranked Thessaloniki, the country's second-largest city, the world's fifth best "Ultimate Party Town", alongside cities such as Montreal and Dubai, while in 2011 the island of Santorini was voted as the best island in the world by Travel + Leisure. The neighbouring island of Mykonos was ranked as the 5th best island Europe. Thessaloniki was the European Youth Capital in 2014.
What have a number of tourism-related organizations placed Greek destinations at the bottom of?
Answer: unanswerable

Question: The alloy of copper and nickel, called cupronickel, is used in low-denomination coins, often for the outer cladding. The US 5-cent coin called a nickel consists of 75% copper and 25% nickel and has a homogeneous composition. The alloy consisting of 90% copper and 10% nickel is remarkable for its resistance to corrosion and is used in various parts that are exposed to seawater. Alloys of copper with aluminium (about 7%) have a pleasant golden color and are used in decorations. Some lead-free solders consist of tin alloyed with a small proportion of copper and other metals.
Is there an answer to this question: What is the wood composition of a US nickel?

Answer: unanswerable

QUES: Prior to the designation of immunity from the etymological root immunis, which is Latin for "exempt"; early physicians characterized organs that would later be proven as essential components of the immune system. The important lymphoid organs of the immune system are the thymus and bone marrow, and chief lymphatic tissues such as spleen, tonsils, lymph vessels, lymph nodes, adenoids, and liver. When health conditions worsen to emergency status, portions of immune system organs including the thymus, spleen, bone marrow, lymph nodes and other lymphatic tissues can be surgically excised for examination while patients are still alive.

How do physicians study a patient's immune system organs in emergency situations?
What is the answer?
ANS:
surgically excised for examination while patients are still alive