Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
On May 1, 1960, a U.S. one-man U-2 spy plane was reportedly shot down at high altitude over Soviet Union airspace. The flight was made to gain photo intelligence before the scheduled opening of an East–West summit conference, which had been scheduled in Paris, 15 days later. Captain Francis Gary Powers had bailed out of his aircraft and was captured after parachuting down onto Russian soil. Four days after Powers disappeared, the Eisenhower Administration had NASA issue a very detailed press release noting that an aircraft had "gone missing" north of Turkey. It speculated that the pilot might have fallen unconscious while the autopilot was still engaged, and falsely claimed that "the pilot reported over the emergency frequency that he was experiencing oxygen difficulties."
When was a U-2 downed over the Soviet Union?
A: May 1, 1960

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
After the Russian Revolution of 1917 guerrillas throughout Central Asia, known as basmachi, waged a war against Bolshevik armies in a futile attempt to maintain independence. The Bolsheviks prevailed after a four-year war, in which mosques and villages were burned down and the population heavily suppressed. Soviet authorities started a campaign of secularization, practicing Islam, Judaism, and Christianity was discouraged and repressed, and many mosques, churches, and synagogues were closed. As a consequence of the conflict and Soviet agriculture policies, Central Asia, Tajikistan included, suffered a famine that claimed many lives.
Which religions were encouraged after the four-year war?
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Southern Italy (Magna Graecia) and south-eastern Sicily had been colonized by the Greeks during the 8th century. In 4th century Sicily the leading Greek city and hegemon was Syracuse. During the Hellenistic period the leading figure in Sicily was Agathocles of Syracuse (361 – 289 BCE) who seized the city with an army of mercenaries in 317 BCE. Agathocles extended his power throughout most of the Greek cities in Sicily, fought a long war with the Carthaginians, at one point invading Tunisia in 310 and defeating a Carthaginian army there. This was the first time a European force had invaded the region. After this war he controlled most of south-east Sicily and had himself proclaimed king, in imitation of the Hellenistic monarchs of the east. Agathocles then invaded Italy (c. 300 BCE) in defense of Tarentum against the Bruttians and Romans, but was unsuccessful.
Who was the leading figure in Sicily during the Hellenistic period?
A: Agathocles of Syracuse

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In the late 13th and early 14th centuries, a process took place – primarily in Italy but partly also in the Empire – that historians have termed a 'commercial revolution'. Among the innovations of the period were new forms of partnership and the issuing of insurance, both of which contributed to reducing the risk of commercial ventures; the bill of exchange and other forms of credit that circumvented the canonical laws for gentiles against usury, and eliminated the dangers of carrying bullion; and new forms of accounting, in particular double-entry bookkeeping, which allowed for better oversight and accuracy.
What old form of accounting was created during the late 13th and early 14th centuries?
A:
unanswerable