Problem: Alaska:

The Alaska Native Language Center at the University of Alaska Fairbanks claims that at least 20 Alaskan native languages exist and there are also some languages with different dialects. Most of Alaska's native languages belong to either the EskimoAleut or Na-Dene language families however some languages are thought to be isolates (e.g. Haida) or have not yet been classified (e.g. Tsimshianic). As of 2014[update] nearly all of Alaska's native languages were classified as either threatened, shifting, moribund, nearly extinct, or dormant languages.

How many of Alaska's native languages are in danger of becoming dormant or extinct languages according to a 2015 study?
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A: unanswerable

Problem: The City Council (Gemeinderat) constitutes the executive government of the City of Bern and operates as a collegiate authority. It is composed of five councilors (German: Gemeinderat/-ratin), each presiding over a directorate (Direktion) comprising several departments and bureaus. The president of the executive department acts as mayor (Stadtprasident). In the mandate period 20132016 (Legislatur) the City Council is presided by Stadtprasident Alexander Tschappat. Departmental tasks, coordination measures and implementation of laws decreed by the City Parliament are carried by the City Council. The regular election of the City Council by any inhabitant valid to vote is held every four years. Any resident of Bern allowed to vote can be elected as a member of the City Council. The delegates are selected by means of a system of Majorz. The mayor is elected as such as well by public election while the heads of the other directorates are assigned by the collegiate. The executive body holds its meetings in the Erlacherhof, built by architect Albrecht Sturler after 1747.
How after are the elections?
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Answer: every four years.

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The theoretical difficulties arise from the fact that all of the methods except the X-ray crystal density method rely on the theoretical basis of the Josephson effect and the quantum Hall effect. If these theories are slightly inaccurate though there is no evidence at present to suggest they are the methods would not give accurate values for the Planck constant. More importantly, the values of the Planck constant obtained in this way cannot be used as tests of the theories without falling into a circular argument. Fortunately, there are other statistical ways of testing the theories, and the theories have yet to be refuted.
What is the saving grace of relying on these theories?
A: there are other statistical ways of testing the theories, and the theories have yet to be refuted.

Context and question: Two years later, the Royal African Company was inaugurated, receiving from King Charles a monopoly of the trade to supply slaves to the British colonies of the Caribbean. From the outset, slavery was the basis of the British Empire in the West Indies. Until the abolition of the slave trade in 1807, Britain was responsible for the transportation of 3.5 million African slaves to the Americas, a third of all slaves transported across the Atlantic. To facilitate this trade, forts were established on the coast of West Africa, such as James Island, Accra and Bunce Island. In the British Caribbean, the percentage of the population of African descent rose from 25 percent in 1650 to around 80 percent in 1780, and in the 13 Colonies from 10 percent to 40 percent over the same period (the majority in the southern colonies). For the slave traders, the trade was extremely profitable, and became a major economic mainstay for such western British cities as Bristol and Liverpool, which formed the third corner of the so-called triangular trade with Africa and the Americas. For the transported, harsh and unhygienic conditions on the slaving ships and poor diets meant that the average mortality rate during the Middle Passage was one in seven.
When was the British slave trade abolished?
Answer: 1807

Question: Arabic translation efforts and techniques are important to Western translation traditions due to centuries of close contacts and exchanges. Especially after the Renaissance, Europeans began more intensive study of Arabic and Persian translations of classical works as well as scientific and philosophical works of Arab and oriental origins. Arabic and, to a lesser degree, Persian became important sources of material and perhaps of techniques for revitalized Western traditions, which in time would overtake the Islamic and oriental traditions.
Is there an answer to this question: Who never studied Arabic and Persian translations?

Answer: unanswerable

In the 1500s a new type of armor started to become popular due to the advent of firearms, new fighting tactics and the need for additional protection. The kozane dou made from individual scales was replaced by plate armor. This new armor, which used iron plated dou (do), was referred to as Tosei-gusoku, or modern armor. Various other components of armor protected the samurai's body. The helmet kabuto was an important part of the samurai's armor. Samurai armor changed and developed as the methods of samurai warfare changed over the centuries. The known last use of samurai armor occurring in 1877 during the satsuma rebellion. As the last samurai rebellion was crushed, Japan modernized its defenses and turned to a national conscription army that used uniforms.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Why were there armor changes in the 1500s?
Ah, so..
the advent of firearms, new fighting tactics and the need for additional protection