Question: Estimates of the recognized Greek Muslim minority, which is mostly located in Thrace, range from 98,000 to 140,000, (about 1%) while the immigrant Muslim community numbers between 200,000 and 300,000. Albanian immigrants to Greece are usually associated with the Muslim religion, although most are secular in orientation. Following the 1919–1922 Greco-Turkish War and the 1923 Treaty of Lausanne, Greece and Turkey agreed to a population transfer based on cultural and religious identity. About 500,000 Muslims from Greece, predominantly those defined as Turks, but also Greek Muslims like the Vallahades of western Macedonia, were exchanged with approximately 1,500,000 Greeks from Turkey. However, many refugees who settled in former Ottoman Muslim villages in Central Macedonia and were defined as Christian Orthodox Caucasus Greeks arrived from the former Russian Transcaucasus province of Kars Oblast after it had been retroceded to Turkey but in the few years before the official population exchange.
Is there an answer to this question: Greek Muslims were in a population exchange with what country?

Answer: Turkey


Question: A further limitation of the gramophone record is that fidelity steadily declines as playback progresses; there is more vinyl per second available for fine reproduction of high frequencies at the large-diameter beginning of the groove than exist at the smaller-diameters close to the end of the side. At the start of a groove on an LP there are 510 mm of vinyl per second traveling past the stylus while the ending of the groove gives 200–210 mm of vinyl per second — less than half the linear resolution. Distortion towards the end of the side is likely to become more apparent as record wear increases.*
Is there an answer to this question: What happens as a record wears?

Answer: Distortion


Question: Alsace-Lorraine was occupied by Germany in 1940 during the Second World War. Although Germany never formally annexed Alsace-Lorraine, it was incorporated into the Greater German Reich, which had been restructured into Reichsgaue. Alsace was merged with Baden, and Lorraine with the Saarland, to become part of a planned Westmark. During the war, 130,000 young men from Alsace and Lorraine were inducted into the German army against their will (malgré-nous) and in some cases, the Waffen SS. Some of the latter were involved in war crimes such as the Oradour-sur-Glane massacre. Most of them perished on the eastern front. The few that could escape fled to Switzerland or joined the resistance. In July 1944, 1500 malgré-nous were released from Soviet captivity and sent to Algiers, where they joined the Free French Forces.
Is there an answer to this question: How many soldiers managed to join the resistance?

Answer: unanswerable


Question: In the beginning of 1996, several human rights groups brought cases to hold Shell accountable for alleged human rights violations in Nigeria, including summary execution, crimes against humanity, torture, inhumane treatment and arbitrary arrest and detention. In particular, Shell stood accused of collaborating in the execution of Ken Saro-Wiwa and eight other leaders of the Ogoni tribe of southern Nigeria, who were hanged in 1995 by Nigeria's then military rulers. The lawsuits were brought against Royal Dutch Shell and Brian Anderson, the head of its Nigerian operation. In 2009, Shell agreed to pay $15.5m in a legal settlement. Shell has not accepted any liability over the allegations against it.
Is there an answer to this question: When was Brian Anderson hanged?

Answer:
unanswerable