Problem: Alsace:

By the time of the Protestant Reformation in the 16th century, Strasbourg was a prosperous community, and its inhabitants accepted Protestantism in 1523. Martin Bucer was a prominent Protestant reformer in the region. His efforts were countered by the Roman Catholic Habsburgs who tried to eradicate heresy in Upper Alsace. As a result, Alsace was transformed into a mosaic of Catholic and Protestant territories. On the other hand, Mömpelgard (Montbéliard) to the southwest of Alsace, belonging to the Counts of Württemberg since 1397, remained a Protestant enclave in France until 1793.

When did Strasbourg convert to Catholicism?
---
A: unanswerable


Problem: Norfolk Island was colonised by East Polynesians but was long unpeopled when it was settled by Great Britain as part of its settlement of Australia from 1788. The island served as a convict penal settlement from 6 March 1788 until 5 May 1855, except for an 11-year hiatus between 15 February 1814 and 6 June 1825, when it lay abandoned. On 8 June 1856, permanent civilian residence on the island began when it was settled from Pitcairn Island. In 1913, the UK handed Norfolk over to Australia to administer as an external territory.
Where were the first permanent civilians of Norfolk Island banned from in 1856?
---
Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Detroit has four border crossings: the Ambassador Bridge and the Detroit–Windsor Tunnel provide motor vehicle thoroughfares, with the Michigan Central Railway Tunnel providing railroad access to and from Canada. The fourth border crossing is the Detroit–Windsor Truck Ferry, located near the Windsor Salt Mine and Zug Island. Near Zug Island, the southwest part of the city was developed over a 1,500-acre (610 ha) salt mine that is 1,100 feet (340 m) below the surface. The Detroit Salt Company mine has over 100 miles (160 km) of roads within.
What is the railway tunnel to Canada called?
A: Michigan Central Railway Tunnel


Context and question: The Hanover Zoo is one of the most spectacular and best zoos in Europe. The zoo received the Park Scout Award for the fourth year running in 2009/10, placing it among the best zoos in Germany. The zoo consists of several theme areas: Sambesi, Meyers Farm, Gorilla-Mountain, Jungle-Palace, and Mullewapp. Some smaller areas are Australia, the wooded area for wolves, and the so-called swimming area with many seabirds. There is also a tropical house, a jungle house, and a show arena. The new Canadian-themed area, Yukon Bay, opened in 2010. In 2010 the Hanover Zoo had over 1.6 million visitors.
How many people visited the Canadian themed area in 2010?
Answer: unanswerable


Question: The pronounced divergence between literary and colloquial pronunciations found in Hokkien dialects is attributed to the presence of several strata in the Min lexicon. The earliest, colloquial stratum is traced to the Han dynasty (206 BCE - 220 CE); the second colloquial one comes from the period of the Southern and Northern Dynasties (420 - 589 CE); the third stratum of pronunciations (typically literary ones) comes from the Tang Dynasty (618–907 CE) and is based on the prestige dialect of Chang'an (modern day Xi'an), its capital.
Is there an answer to this question: Colloquial stratum can be traced to several strata in what lexicon?

Answer: Min


QUES: For air dielectric capacitors the breakdown field strength is of the order 2 to 5 MV/m; for mica the breakdown is 100 to 300 MV/m; for oil, 15 to 25 MV/m; it can be much less when other materials are used for the dielectric. The dielectric is used in very thin layers and so absolute breakdown voltage of capacitors is limited. Typical ratings for capacitors used for general electronics applications range from a few volts to 1 kV. As the voltage increases, the dielectric must be thicker, making high-voltage capacitors larger per capacitance than those rated for lower voltages. The breakdown voltage is critically affected by factors such as the geometry of the capacitor conductive parts; sharp edges or points increase the electric field strength at that point and can lead to a local breakdown. Once this starts to happen, the breakdown quickly tracks through the dielectric until it reaches the opposite plate, leaving carbon behind and causing a short (or relatively low resistance) circuit. The results can be explosive as the short in the capacitor draws current from the surrounding circuitry and dissipates the energy.

Of what order is the breakdown field strength for mica dielectric capacitors?
What is the answer?
ANS:
100 to 300 MV/m