Problem: Compact disc:

In 1974, L. Ottens, director of the audio division of Philips, started a small group with the aim to develop an analog optical audio disc with a diameter of 20 cm and a sound quality superior to that of the vinyl record. However, due to the unsatisfactory performance of the analog format, two Philips research engineers recommended a digital format in March 1974. In 1977, Philips then established a laboratory with the mission of creating a digital audio disc. The diameter of Philips's prototype compact disc was set at 11.5 cm, the diagonal of an audio cassette.

Who was the director of the Philips audio division in 1974?
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A: L. Ottens


Problem: The Obama administration began to reengage in Iraq with a series of airstrikes aimed at ISIS beginning on 10 August 2014. On 9 September 2014 President Obama said that he had the authority he needed to take action to destroy the militant group known as the Islamic State of Iraq and the Levant, citing the 2001 Authorization for Use of Military Force Against Terrorists, and thus did not require additional approval from Congress. The following day on 10 September 2014 President Barack Obama made a televised speech about ISIL, which he stated "Our objective is clear: We will degrade, and ultimately destroy, ISIL through a comprehensive and sustained counter-terrorism strategy". Obama has authorized the deployment of additional U.S. Forces into Iraq, as well as authorizing direct military operations against ISIL within Syria. On the night of 21/22 September the United States, Saudi Arabia, Bahrain, the UAE, Jordan and Qatar started air attacks against ISIS in Syria.[citation needed]
Who did Iraq aim their airstrikes at?
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Unfortunately, Isabella was already engaged to Hugh of Lusignan, an important member of a key Poitou noble family and brother of Count Raoul of Eu, who possessed lands along the sensitive eastern Normandy border. Just as John stood to benefit strategically from marrying Isabella, so the marriage threatened the interests of the Lusignans, whose own lands currently provided the key route for royal goods and troops across Aquitaine. Rather than negotiating some form of compensation, John treated Hugh "with contempt"; this resulted in a Lusignan uprising that was promptly crushed by John, who also intervened to suppress Raoul in Normandy.
Hugh of Lusignan was an important member of what?
A: a key Poitou noble family


Context and question: While still a student, he was offered a small unpaid intern job at Universal Studios with the editing department. He was later given the opportunity to make a short film for theatrical release, the 26-minute, 35mm, Amblin', which he wrote and directed. Studio vice president Sidney Sheinberg was impressed by the film, which had won a number of awards, and offered Spielberg a seven-year directing contract. It made him the youngest director ever to be signed for a long-term deal with a major Hollywood studio.:548 He subsequently dropped out of college to begin professionally directing TV productions with Universal.
How did Sidney Sheinberg feel about the film "Amblin'"
Answer: impressed


Question: Von Neumann made fundamental contributions to mathematical statistics. In 1941, he derived the exact distribution of the ratio of the mean square of successive differences to the sample variance for independent and identically normally distributed variables. This ratio was applied to the residuals from regression models and is commonly known as the Durbin–Watson statistic for testing the null hypothesis that the errors are serially independent against the alternative that they follow a stationary first order autoregression.
Is there an answer to this question: How has mean square ratio been applied?

Answer: Durbin–Watson statistic


Problem: European Central Bank:

The primary objective of the European Central Bank, as laid down in Article 127(1) of the Treaty on the Functioning of the European Union, is to maintain price stability within the Eurozone. The Governing Council in October 1998 defined price stability as inflation of under 2%, “a year-on-year increase in the Harmonised Index of Consumer Prices (HICP) for the euro area of below 2%” and added that price stability ”was to be maintained over the medium term”. (Harmonised Index of Consumer Prices) Unlike for example the United States Federal Reserve Bank, the ECB has only one primary objective but this objective has never been defined in statutory law, and the HICP target can be termed ad-hoc.

What did the Harmonised Index of Consumer Prices state that price stability had to be decreased from?
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A:
unanswerable