Problem: John von Neumann:

Von Neumann's mathematical analysis of the structure of self-replication preceded the discovery of the structure of DNA. In a short list of facts about his life he submitted to the National Academy of Sciences, he stated "The part of my work I consider most essential is that on quantum mechanics, which developed in Göttingen in 1926, and subsequently in Berlin in 1927–1929. Also, my work on various forms of operator theory, Berlin 1930 and Princeton 1935–1939; on the ergodic theorem, Princeton, 1931–1932."

Von Neumann's study of what preceded the discovery of DNA?
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A: mathematical analysis of the structure of self-replication


Problem: Islington's 1 mile (1.6 km) long Upper Street, extending northwards from Angel, has more bars and restaurants than any other street in the United Kingdom. Europe's busiest shopping area is Oxford Street, a shopping street nearly 1 mile (1.6 km) long, making it the longest shopping street in the United Kingdom. Oxford Street is home to vast numbers of retailers and department stores, including the world-famous Selfridges flagship store. Knightsbridge, home to the equally renowned Harrods department store, lies to the south-west.
What street in Islington boasts more bars and restaurants than any other street in Britain?
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Answer: Upper Street


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Different linguists therefore take different approaches to the problem of assigning sounds to phonemes. For example, they differ in the extent to which they require allophones to be phonetically similar. There are also differing ideas as to whether this grouping of sounds is purely a tool for linguistic analysis, or reflects an actual process in the way the human brain processes a language.
The phonetical similarity of what thing causes disagreements between linguists?
A: allophones


Context and question: After a nonprofit organization has been formed at the state level, the organization may seek recognition of tax exempt status with respect to U.S. federal income tax. That is done typically by applying to the Internal Revenue Service (IRS), although statutory exemptions exist for limited types of nonprofit organizations. The IRS, after reviewing the application to ensure the organization meets the conditions to be recognized as a tax exempt organization (such as the purpose, limitations on spending, and internal safeguards for a charity), may issue an authorization letter to the nonprofit granting it tax exempt status for income tax payment, filing, and deductibility purposes. The exemption does not apply to other Federal taxes such as employment taxes. Additionally, a tax-exempt organization must pay federal tax on income that is unrelated to their exempt purpose. Failure to maintain operations in conformity to the laws may result in an organization losing its tax exempt status.
How does a nonprofit ensure limits on spending?
Answer: unanswerable


Question: On June 28, 1776, General Sir Henry Clinton along with 2,000 men and a naval squadron tried to seize Charles Towne, hoping for a simultaneous Loyalist uprising in South Carolina. When the fleet fired cannonballs, they failed to penetrate Fort Sullivan's unfinished, yet thick, palmetto-log walls. No local Loyalists attacked the town from the mainland side, as the British had hoped they would do. Col. Moultrie's men returned fire and inflicted heavy damage on several of the British ships. The British were forced to withdraw their forces, and the Americans renamed the defensive installation as Fort Moultrie in honor of its commander.
Is there an answer to this question: Who was the commander of the American forces defending North Carolina?

Answer: unanswerable


QUES: Starting in 2010/2011, Hauptschulen were merged with Realschulen and Gesamtschulen to form a new type of comprehensive school in the German States of Berlin and Hamburg, called Stadtteilschule in Hamburg and Sekundarschule in Berlin (see: Education in Berlin, Education in Hamburg).

What was the combination of Hauptschulen with Realschulen and Gesamtschulen called in Hamburger?
What is the answer?
ANS:
unanswerable