Problem: Antarctica:

Vinson Massif, the highest peak in Antarctica at 4,892 m (16,050 ft), is located in the Ellsworth Mountains. Antarctica contains many other mountains, on both the main continent and the surrounding islands. Mount Erebus on Ross Island is the world's southernmost active volcano. Another well-known volcano is found on Deception Island, which is famous for a giant eruption in 1970. Minor eruptions are frequent and lava flow has been observed in recent years. Other dormant volcanoes may potentially be active. In 2004, a potentially active underwater volcano was found in the Antarctic Peninsula by American and Canadian researchers.

Where is Massif Vinson located?
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A: unanswerable

Problem: After years of high increase, the unemployment in Portugal has been in a continuous falling trend since the third quarter of 2014, decreasing from a peak of 17.7% achieved in the early 2013 to a rate of 11.9% in the second quarter of 2015. However, it is high still high compared with what was the normal average Portuguese unemployment rate in the past. In the second quarter of 2008 the unemployment rate was 7.3%, but the rate immediately rose the following period. By December 2009, unemployment had surpassed the 10% mark nationwide in the wake of worldwide events, by 2010, the rate was around 11% and in 2011 it was above 12%.[citation needed] The first quarter of 2013 signified a new unemployment rate record for Portugal, as it reached 17.7% up from 17% in the previous quarter and the Government has predicted an 18.5% unemployment rate in 2014. However, in the third quarter of the same year, it has surprisingly declined to a rate of 15.6%. From then on, the unemployment downtrend continued, declining to 13.9% in the second semester of 2014 and to 11.9% in the second quarter of 2015.
By when did the Portuguese unemployment rate pass the 10% mark?
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Answer: December 2009

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The law of the United States comprises many levels of codified and uncodified forms of law, of which the most important is the United States Constitution, the foundation of the federal government of the United States. The Constitution sets out the boundaries of federal law, which consists of acts of Congress, treaties ratified by the Senate, regulations promulgated by the executive branch, and case law originating from the federal judiciary. The United States Code is the official compilation and codification of general and permanent federal statutory law.
What is the foundation of the United States federal government?
A: United States Constitution

Context and question: Manufacturers of devices may have their own proprietary numbering system, for example CK722. Since devices are second-sourced, a manufacturer's prefix (like "MPF" in MPF102, which originally would denote a Motorola FET) now is an unreliable indicator of who made the device. Some proprietary naming schemes adopt parts of other naming schemes, for example a PN2222A is a (possibly Fairchild Semiconductor) 2N2222A in a plastic case (but a PN108 is a plastic version of a BC108, not a 2N108, while the PN100 is unrelated to other xx100 devices).
What is the marking for a 2N2222A in a plastic case?
Answer: PN2222A

Question: Burke knew that many members of the Whig Party did not share Fox's views and he wanted to provoke them into condemning the French Revolution. Burke wrote that he wanted to represent the whole Whig party "as tolerating, and by a toleration, countenancing those proceedings" so that he could "stimulate them to a public declaration of what every one of their acquaintance privately knows to be...their sentiments". Therefore, on 3 August 1791 Burke published his Appeal from the New to the Old Whigs, in which he renewed his criticism of the radical revolutionary programmes inspired by the French Revolution and attacked the Whigs who supported them, as holding principles contrary to those traditionally held by the Whig party.
Is there an answer to this question: What pamphlet did Fox publish in 3 August 1791?

Answer: unanswerable

Question: However Cornelius Clifford places his birth no earlier than 296 and no later than 298, based on the fact that Athanasius indicates no first hand recollection of the Maximian persecution of 303, which he suggests Athanasius would have remembered if he had been ten years old at the time. Secondly, the Festal Epistles state that the Arians had accused Athanasius, among other charges, of not having yet attained the canonical age (30) and thus could not have been properly ordained as Patriarch of Alexandria in 328. The accusation must have seemed plausible. The Orthodox Church places his year of birth around 297.
Is there an answer to this question: When was Cornelius Clifford born?

Answer:
unanswerable