Problem: On the Origin of Species:

Richard Owen showed that fossils of extinct species Darwin found in South America were allied to living species on the same continent. In March 1837, ornithologist John Gould announced that Darwin's rhea was a separate species from the previously described rhea (though their territories overlapped), that mockingbirds collected on the Galapagos Islands represented three separate species each unique to a particular island, and that several distinct birds from those islands were all classified as finches. Darwin began speculating, in a series of notebooks, on the possibility that "one species does change into another" to explain these findings, and around July sketched a genealogical branching of a single evolutionary tree, discarding Lamarck's independent lineages progressing to higher forms. Unconventionally, Darwin asked questions of fancy pigeon and animal breeders as well as established scientists. At the zoo he had his first sight of an ape, and was profoundly impressed by how human the orangutan seemed.

How many species of mockingbirds were found to be present on the Galapagos Islands?
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A: three separate species

Problem: In Armenia Russian has no official status, but it's recognised as a minority language under the Framework Convention for the Protection of National Minorities. According to estimates from Demoskop Weekly, in 2004 there were 15,000 native speakers of Russian in the country, and 1 million active speakers. 30% of the population was fluent in Russian in 2006, and 2% used it as the main language with family, friends or at work. Russian is spoken by 1.4% of the population according to a 2009 estimate from the World Factbook.
What percent of Armenia speaks Russian?
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Answer: 30%

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Bermuda's national cricket team participated in the Cricket World Cup 2007 in the West Indies. Their most famous player is a 130 kilograms (290 lb) police officer named Dwayne Leverock. But India defeated Bermuda and set a record of 413 runs in a One-Day International (ODI). Bermuda were knocked out of the World Cup. Also very well-known is David Hemp, a former captain of Glamorgan in English first class cricket. The annual "Cup Match" cricket tournament between rival parishes St George's in the east and Somerset in the west is the occasion for a popular national holiday. This tournament began in 1872 when Captain Moresby of the Royal Navy introduced the game to Bermuda, holding a match at Somerset to mark forty years since the unjust thraldom of slavery. The East End versus West End rivalry resulted from the locations of the St. George's Garrison (the original army headquarters in Bermuda) on Barrack Hill, St. George's, and the Royal Naval Dockyard at Ireland Island. Moresby founded the Somerset Cricket Club which plays the St. George's Cricket Club in this game (the membership of both clubs has long been mostly civilian).
Who is 130 lb Dwayne Leverock to the cricket team?
A: unanswerable

Context and question: The Air Commerce Act of May 20, 1926, is the cornerstone of the federal government's regulation of civil aviation. This landmark legislation was passed at the urging of the aviation industry, whose leaders believed the airplane could not reach its full commercial potential without federal action to improve and maintain safety standards. The Act charged the Secretary of Commerce with fostering air commerce, issuing and enforcing air traffic rules, licensing pilots, certifying aircraft, establishing airways, and operating and maintaining aids to air navigation. The newly created Aeronautics Branch, operating under the Department of Commerce assumed primary responsibility for aviation oversight.
Who was responsible for operating and maintaining aids to air navigation?
Answer: Secretary of Commerce

Question: where a single prime denotes the real part and a double prime the imaginary part, Z() is the complex impedance with the dielectric present, Ccmplx() is the so-called complex capacitance with the dielectric present, and C0 is the capacitance without the dielectric. (Measurement "without the dielectric" in principle means measurement in free space, an unattainable goal inasmuch as even the quantum vacuum is predicted to exhibit nonideal behavior, such as dichroism. For practical purposes, when measurement errors are taken into account, often a measurement in terrestrial vacuum, or simply a calculation of C0, is sufficiently accurate.)
Is there an answer to this question: Under what condition is the approximation C0 sufficiently accurate for calculation purposes?

Answer: in terrestrial vacuum

Problem: Tuvalu:

In 1890 Robert Louis Stevenson, his wife Fanny Vandegrift Stevenson and her son Lloyd Osbourne sailed on the Janet Nicoll, a trading steamer owned by Henderson and Macfarlane of Auckland, New Zealand, which operated between Sydney and Auckland and into the central Pacific. The Janet Nicoll visited three of the Ellice Islands; while Fanny records that they made landfall at Funafuti, Niutao and Nanumea, Jane Resture suggests that it was more likely they landed at Nukufetau rather than Funafuti. An account of this voyage was written by Fanny Stevenson and published under the title The Cruise of the Janet Nichol, together with photographs taken by Robert Louis Stevenson and Lloyd Osbourne.

Who recorded the trip aboard the Janet Nicoll?
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A:
Fanny Vandegrift Stevenson