Problem: Videoconferencing:

In May 2005, the first high definition video conferencing systems, produced by LifeSize Communications, were displayed at the Interop trade show in Las Vegas, Nevada, able to provide video at 30 frames per second with a 1280 by 720 display resolution. Polycom introduced its first high definition video conferencing system to the market in 2006. As of the 2010s, high definition resolution for videoconferencing became a popular feature, with most major suppliers in the videoconferencing market offering it.

Where was the first HD video conferencing system displayed?
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A: Las Vegas, Nevada


Problem: Burke was a leading sceptic with respect to democracy. While admitting that theoretically, in some cases it might be desirable, he insisted a democratic government in Britain in his day would not only be inept, but also oppressive. He opposed democracy for three basic reasons. First, government required a degree of intelligence and breadth of knowledge of the sort that occurred rarely among the common people. Second, he thought that if they had the vote, common people had dangerous and angry passions that could be aroused easily by demagogues; he feared that the authoritarian impulses that could be empowered by these passions would undermine cherished traditions and established religion, leading to violence and confiscation of property. Third, Burke warned that democracy would create a tyranny over unpopular minorities, who needed the protection of the upper classes.
What group did Burke believe would instigate passions of demagogues?
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The 1961 volcanic eruption destroyed the Tristan da Cunha canned crawfish factory, which was rebuilt a short time later. The crawfish catchers and processors work for the South African company Ovenstone, which has an exclusive contract to sell crawfish to the United States and Japan. Even though Tristan da Cunha is a UK overseas territory, it is not permitted direct access to European Union markets. Recent[clarification needed] economic conditions have meant that the islanders have had to draw from their reserves. The islands' financial problems may cause delays in updating communication equipment and improving education on the island. The fire of 13 February 2008 (see History) resulted in major temporary economic disruption.
What may expedite the improving of education on the island?
A: unanswerable


Context and question: The digital data on a CD begins at the center of the disc and proceeds toward the edge, which allows adaptation to the different size formats available. Standard CDs are available in two sizes. By far, the most common is 120 millimetres (4.7 in) in diameter, with a 74- or 80-minute audio capacity and a 650 or 700 MiB (737,280,000-byte) data capacity. This capacity was reportedly specified by Sony executive Norio Ohga in May 1980 so as to be able to contain the entirety of the London Philharmonic Orchestra's recording of Beethoven's Ninth Symphony on one disc. This is a myth according to Kees Immink, as the code format had not yet been decided in May 1980. The adoption of EFM one month later would have allowed a playing time of 97 minutes for 120 mm diameter or 74 minutes for a disc as small as 100 mm. The 120 mm diameter has been adopted by subsequent formats, including Super Audio CD, DVD, HD DVD, and Blu-ray Disc. Eighty-millimeter discs ("Mini CDs") were originally designed for CD singles and can hold up to 24 minutes of music or 210 MiB of data but never became popular.[citation needed] Today, nearly every single is released on a 120 mm CD, called a Maxi single.[citation needed]
What is the size of a Maxi Single?
Answer: 120 mm


Question: As of 2013 the City of Paris had 1,570 hotels with 70,034 rooms, of which 55 were rated five-star, mostly belonging to international chains and mostly located close to the centre and the Champs-Élysées. Paris has long been famous for its grand hotels. The Hotel Meurice, opened for British travellers in 1817, was one of the first luxury hotels in Paris. The arrival of the railroads and the Paris Exposition of 1855 brought the first flood of tourists and the first modern grand hotels; the Hôtel du Louvre (now an antiques marketplace) in 1855; the Grand Hotel (now the Intercontinental LeGrand) in 1862; and the Hôtel Continental in 1878. The Hôtel Ritz on Place Vendôme opened in 1898, followed by the Hôtel Crillon in an 18th-century building on the Place de la Concorde in 1909; the Hotel Bristol on rue de Fabourg Saint-Honoré in 1925; and the Hotel George V in 1928.
Is there an answer to this question: How many hotels are in the City of Paris?

Answer: 1,570


Question: In consequence to the Reform War, the federal government was bankrupt and could not pay its foreign debts to Spain, England, and France. On July 17, 1861, President Juárez decreed a moratorium on payment to foreign debtors for a period of two years. Spain, England, and France did not accept the moratorium by Mexico; they united at the Convention of the Triple Alliance on October 31, 1861 in which they agreed to take possession of several custom stations within Mexico as payment. A delegation of the Triple Alliance arrived in Veracruz in December 1861. President Juárez immediately sent his Foreign Affairs Minister, Manuel Doblado, who is able to reduce the debts through the Pacto de Soledad (Soledad Pact). General Juan Prim of Spain persuaded the English delegation to accept the terms of the Pacto de Soledad, but the French delegation refused.
Is there an answer to this question: Which country refused to accept?

Answer:
France