Problem: Richmond, Virginia:

Richmond is located at 3732N 7728W / 37.533N 77.467W / 37.533; -77.467 (37.538, 77.462). According to the United States Census Bureau, the city has a total area of 62 square miles (160 km2), of which 60 square miles (160 km2) is land and 2.7 square miles (7.0 km2) of it (4.3%) is water. The city is located in the Piedmont region of Virginia, at the highest navigable point of the James River. The Piedmont region is characterized by relatively low, rolling hills, and lies between the low, sea level Tidewater region and the Blue Ridge Mountains. Significant bodies of water in the region include the James River, the Appomattox River, and the Chickahominy River.

In which of Virginia's regions is Richmond?
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A: Piedmont

Problem: Together with caesium and gold (both yellow), and osmium (bluish), copper is one of only four elemental metals with a natural color other than gray or silver. Pure copper is orange-red and acquires a reddish tarnish when exposed to air. The characteristic color of copper results from the electronic transitions between the filled 3d and half-empty 4s atomic shells the energy difference between these shells is such that it corresponds to orange light. The same mechanism accounts for the yellow color of gold and caesium.
What color is pure copper?
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Answer: orange-red

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
During its formative period, the term madrasah referred to a higher education institution, whose curriculum initially included only the "religious sciences", whilst philosophy and the secular sciences were often excluded. The curriculum slowly began to diversify, with many later madaris teaching both the religious and the "secular sciences", such as logic, mathematics and philosophy. Some madaris further extended their curriculum to history, politics, ethics, music, metaphysics, medicine, astronomy and chemistry. The curriculum of a madrasah was usually set by its founder, but most generally taught both the religious sciences and the physical sciences. Madaris were established throughout the Islamic world, examples being the 9th century University of al-Qarawiyyin, the 10th century al-Azhar University (the most famous), the 11th century Nizamiyah, as well as 75 madaris in Cairo, 51 in Damascus and up to 44 in Aleppo between 1155 and 1260. Many more were also established in the Andalusian cities of Cordoba, Seville, Toledo, Granada (Madrasah of Granada), Murcia, Almeria, Valencia and Cadiz during the Caliphate of Cordoba.
What is the least widely known madrasah?
A: unanswerable

Context and question: A number of vessels visiting the islands were attacked and their crews killed. In 1834, Captain DonSette and his crew were killed. Similarly, in 1845 the schooner Naiad punished a native for stealing with such violence that the natives attacked the ship. Later that year a whaler's boat crew were killed. In 1852 the San Francisco-based ships Glencoe and Sea Nymph were attacked and everyone aboard except for one crew member were killed. The violence was usually attributed as a response to the ill treatment of the natives in response to petty theft, which was a common practice. In 1857, two missionaries successfully settled on Ebon, living among the natives through at least 1870.:3
On what island did the Missionaries live with citizens of the Marshall Islands?
Answer: Ebon

Question: However, according to research firm NPD, sales of devices running Windows in the United States have declined 21 percent compared to the same time period in 2011. As the holiday shopping season wrapped up, Windows 8 sales continued to lag, even as Apple reported brisk sales. The market research firm IDC reported an overall drop in PC sales for the quarter, and said the drop may have been partly due to consumer reluctance to embrace the new features of the OS and poor support from OEM for these features. This capped the first year of declining PC sales to the Asia Pacific region, as consumers bought more mobile devices than Windows PCs.
Is there an answer to this question: What is the decline in PC sales attributed to?

Answer: consumers bought more mobile devices

Problem: Christian:

In the past, the Malays used to call the Portuguese Serani from the Arabic Nasrani, but the term now refers to the modern Kristang creoles of Malaysia.

Who did the Malays call Kristang creoles in the past?
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A:
unanswerable