Problem: Comprehensive school:

The "Mittelschule" is a school in some States of Germany that offers regular classes and remedial classes but no college preparatory classes. In some States of Germany, the Hauptschule does not exist, and any student who has not been accepted by another school has to attend the Mittelschule. Students may be awarded the Hauptschulabschluss or the Mittlere Reife but not the Abitur.

What kind of classes are offered in Mittelschule?
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A: unanswerable


Problem: North Carolina:

Differences in the settlement patterns of eastern and western North Carolina, or the Low Country and uplands, affected the political, economic, and social life of the state from the 18th until the 20th century. The Tidewater in eastern North Carolina was settled chiefly by immigrants from rural England and the Scottish Highlands. The upcountry of western North Carolina was settled chiefly by Scots-Irish, English, and German Protestants, the so-called "cohee". Arriving during the mid- to late 18th century, the Scots-Irish from what is today Northern Ireland were the largest non-English immigrant group before the Revolution; English indentured servants were overwhelmingly the largest immigrant group before the Revolution. During the American Revolutionary War, the English and Highland Scots of eastern North Carolina tended to remain loyal to the British Crown, because of longstanding business and personal connections with Great Britain. The English, Welsh, Scots-Irish, and German settlers of western North Carolina tended to favor American independence from Britain.

Who did the Tidewater settlers remain loyal to during the American revolution?
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A: the British Crown


Problem: Jehovah%27s Witnesses:

In 1870, Charles Taze Russell and others formed a group in Pittsburgh, Pennsylvania, to study the Bible. During the course of his ministry, Russell disputed many beliefs of mainstream Christianity including immortality of the soul, hellfire, predestination, the fleshly return of Jesus Christ, the Trinity, and the burning up of the world. In 1876, Russell met Nelson H. Barbour; later that year they jointly produced the book Three Worlds, which combined restitutionist views with end time prophecy. The book taught that God's dealings with humanity were divided dispensationally, each ending with a "harvest," that Christ had returned as an invisible spirit being in 1874 inaugurating the "harvest of the Gospel age," and that 1914 would mark the end of a 2520-year period called "the Gentile Times," at which time world society would be replaced by the full establishment of God's kingdom on earth. Beginning in 1878 Russell and Barbour jointly edited a religious journal, Herald of the Morning. In June 1879 the two split over doctrinal differences, and in July, Russell began publishing the magazine Zion's Watch Tower and Herald of Christ's Presence, stating that its purpose was to demonstrate that the world was in "the last days," and that a new age of earthly and human restitution under the reign of Christ was imminent.

What major event occurred in 1914?
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A: unanswerable


Problem: Light-emitting diode:

Among the challenges being faced to improve the efficiency of LED-based white light sources is the development of more efficient phosphors. As of 2010, the most efficient yellow phosphor is still the YAG phosphor, with less than 10% Stoke shift loss. Losses attributable to internal optical losses due to re-absorption in the LED chip and in the LED packaging itself account typically for another 10% to 30% of efficiency loss. Currently, in the area of phosphor LED development, much effort is being spent on optimizing these devices to higher light output and higher operation temperatures. For instance, the efficiency can be raised by adapting better package design or by using a more suitable type of phosphor. Conformal coating process is frequently used to address the issue of varying phosphor thickness.

What is the most efficient yellow phosphor?
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A:
YAG phosphor