Problem: Mexico City:

On Thursday, September 19, 1985, at 7:19 am local time, Mexico City was struck by an earthquake of magnitude 8.1 on the Richter scale. Although this earthquake was not as deadly or destructive as many similar events in Asia and other parts of Latin America, it proved to be a disaster politically for the one-party government. The government was paralyzed by its own bureaucracy and corruption, forcing ordinary citizens to create and direct their own rescue efforts and to reconstruct much of the housing that was lost as well.

Why did the one-party government struggle after the major earthquake in 1985?
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A: paralyzed by its own bureaucracy and corruption

Problem: The Royal Canadian Air Force (RCAF) is headed by the Commander of the Royal Canadian Air Force. The commander of 1 Canadian Air Division and Canadian NORAD Region, based in Winnipeg, is responsible for the operational command and control of Air Force activities throughout Canada and worldwide. 1 Canadian Air Division operations are carried out through eleven wings located across Canada. The commander of 2 Canadian Air Division is responsible for training and support functions. 2 Canadian Air Division operations are carried out at two wings. Wings represent the grouping of various squadrons, both operational and support, under a single tactical commander reporting to the operational commander and vary in size from several hundred personnel to several thousand.
How many air force wings are located outside of Canada?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In the nineteenth and twentieth centuries the RIBA and its members had a leading part in the promotion of architectural education in the United Kingdom, including the establishment of the Architects' Registration Council of the United Kingdom (ARCUK) and the Board of Architectural Education under the Architects (Registration) Acts, 1931 to 1938. A member of the RIBA, Lionel Bailey Budden, then Associate Professor in the Liverpool University School of Architecture, had contributed the article on Architectural Education published in the fourteenth edition of the Encyclopdia Britannica (1929). His School, Liverpool, was one of the twenty schools named for the purpose of constituting the statutory Board of Architectural Education when the 1931 Act was passed.
How many schools formed the Board of Architectural Education?
A: twenty

Context and question: The South American highlands were a center of early agriculture. Genetic testing of the wide variety of cultivars and wild species suggests that the potato has a single origin in the area of southern Peru, from a species in the Solanum brevicaule complex. Over 99% of all modern cultivated potatoes worldwide are descendants of a subspecies indigenous to south-central Chile, Solanum tuberosum ssp. tuberosum, where it was cultivated as long as 10,000 years ago. According to George Raudzens, "It is clear that in pre-Columbian times some groups struggled to survive and often suffered food shortages and famines, while others enjoyed a varied and substantial diet." The persistent drought around 850 AD coincided with the collapse of Classic Maya civilization, and the famine of One Rabbit (AD 1454) was a major catastrophe in Mexico.
Where did the potato originate?
Answer: area of southern Peru

Question: In 1886, Frank Julian Sprague invented the first practical DC motor, a non-sparking motor that maintained relatively constant speed under variable loads. Other Sprague electric inventions about this time greatly improved grid electric distribution (prior work done while employed by Thomas Edison), allowed power from electric motors to be returned to the electric grid, provided for electric distribution to trolleys via overhead wires and the trolley pole, and provided controls systems for electric operations. This allowed Sprague to use electric motors to invent the first electric trolley system in 188788 in Richmond VA, the electric elevator and control system in 1892, and the electric subway with independently powered centrally controlled cars, which were first installed in 1892 in Chicago by the South Side Elevated Railway where it became popularly known as the "L". Sprague's motor and related inventions led to an explosion of interest and use in electric motors for industry, while almost simultaneously another great inventor was developing its primary competitor, which would become much more widespread. The development of electric motors of acceptable efficiency was delayed for several decades by failure to recognize the extreme importance of a relatively small air gap between rotor and stator. Efficient designs have a comparatively small air gap. [a] The St. Louis motor, long used in classrooms to illustrate motor principles, is extremely inefficient for the same reason, as well as appearing nothing like a modern motor.
Is there an answer to this question: Which inventor created the first useful DC motor?

Answer: Frank Julian Sprague

One adaptation helping both predators and prey avoid detection is camouflage, a form of crypsis where species have an appearance that helps them blend into the background. Camouflage consists of not only color but also shape and pattern. The background upon which the organism is seen can be both its environment (e.g., the praying mantis to the right resembling dead leaves) or other organisms (e.g., zebras' stripes blend in with each other in a herd, making it difficult for lions to focus on a single target). The more convincing camouflage is, the more likely it is that the organism will go unseen.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What else can be used to describe dead leaves besides their color?
Ah, so..
unanswerable