Problem: Glacier:

Tidewater glaciers are glaciers that terminate in the sea, including most glaciers flowing from Greenland, Antarctica, Baffin and Ellesmere Islands in Canada, Southeast Alaska, and the Northern and Southern Patagonian Ice Fields. As the ice reaches the sea, pieces break off, or calve, forming icebergs. Most tidewater glaciers calve above sea level, which often results in a tremendous impact as the iceberg strikes the water. Tidewater glaciers undergo centuries-long cycles of advance and retreat that are much less affected by the climate change than those of other glaciers.

What are tidal glaciers?
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A: unanswerable

Problem: Tucson is located 118 mi (190 km) southeast of Phoenix and 60 mi (97 km) north of the United States - Mexico border. The 2010 United States Census puts the city's population at 520,116 with a metropolitan area population at 980,263. In 2009, Tucson ranked as the 32nd largest city and 52nd largest metropolitan area in the United States. A major city in the Arizona Sun Corridor, Tucson is the largest city in southern Arizona, the second largest in the state after Phoenix. It is also the largest city in the area of the Gadsden Purchase. As of 2015, The Greater Tucson Metro area has exceeded a population of 1 million.
How does Tucson rank among US metro areas?
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Answer: 52nd largest

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Utrecht is well-connected to the Dutch road network. Two of the most important major roads serve the city of Utrecht: the A12 and A2 motorways connect Amsterdam, Arnhem, The Hague and Maastricht, as well as Belgium and Germany. Other major motorways in the area are the AlmereBreda A27 and the UtrechtGroningen A28. Due to the increasing traffic and the ancient city plan, traffic congestion is a common phenomenon in and around Utrecht, causing elevated levels of air pollutants. This has led to a passionate debate in the city about the best way to improve the city's air quality.
What limits the amount of traffic in the city?
A: unanswerable

Context and question: The fossil record suggests that the last few million years featured the greatest biodiversity in history. However, not all scientists support this view, since there is uncertainty as to how strongly the fossil record is biased by the greater availability and preservation of recent geologic sections. Some scientists believe that corrected for sampling artifacts, modern biodiversity may not be much different from biodiversity 300 million years ago., whereas others consider the fossil record reasonably reflective of the diversification of life. Estimates of the present global macroscopic species diversity vary from 2 million to 100 million, with a best estimate of somewhere near 9 million, the vast majority arthropods. Diversity appears to increase continually in the absence of natural selection.
What do some scientists believe is not much different from biodiversity 900 million years ago?
Answer: unanswerable

Question: Balansiyya had a rebirth of sorts with the beginning of the Taifa of Valencia kingdom in the 11th century. The town grew, and during the reign of Abd al-Aziz a new city wall was built, remains of which are preserved throughout the Old City (Ciutat Vella) today. The Castilian nobleman Rodrigo Diaz de Vivar, known as El Cid, who was intent on possessing his own principality on the Mediterranean, entered the province in command of a combined Christian and Moorish army and besieged the city beginning in 1092. By the time the siege ended in May 1094, he had carved out his own fiefdomwhich he ruled from 15 June 1094 to July 1099. This victory was immortalised in the Lay of the Cid. During his rule, he converted nine mosques into churches and installed the French monk Jerome as bishop of the See of Valencia. El Cid was killed in July 1099 while defending the city from an Almoravid siege, whereupon his wife Ximena Diaz ruled in his place for two years.
Is there an answer to this question: When did El Cid die?

Answer: July 1099

The first notable, and historically important, book credited to a Bermudian was The History of Mary Prince, a slave narrative by Mary Prince. It is thought to have contributed to the abolition of slavery in the British Empire. Ernest Graham Ingham, an expatriate author, published his books at the turn of the 19th and 20th centuries. In the 20th century, numerous books were written and published locally, though few were directed at a wider market than Bermuda. (The latter consisted primarily of scholarly works rather than creative writing). The novelist Brian Burland (1931 2010) achieved a degree of success and acclaim internationally. More recently, Angela Barry has won critical recognition for her published fiction.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What historical significance can the book The History of Mary Prince claim?
Ah, so..
The first notable, and historically important, book credited to a Bermudian