Problem: Railway electrification system:

In comparison to the principal alternative, the diesel engine, electric railways offer substantially better energy efficiency, lower emissions and lower operating costs. Electric locomotives are usually quieter, more powerful, and more responsive and reliable than diesels. They have no local emissions, an important advantage in tunnels and urban areas. Some electric traction systems provide regenerative braking that turns the train's kinetic energy back into electricity and returns it to the supply system to be used by other trains or the general utility grid. While diesel locomotives burn petroleum, electricity is generated from diverse sources including many that do not produce carbon dioxide such as nuclear power and renewable forms including hydroelectric, geothermal, wind and solar.

What is the principal alternative to electric railways?
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A: diesel engine

Problem: Schwarzenegger became a naturalized U.S. citizen on September 17, 1983. Shortly before he gained his citizenship, he asked the Austrian authorities for the right to keep his Austrian citizenship, as Austria does not usually allow dual citizenship. His request was granted, and he retained his Austrian citizenship. In 2005, Peter Pilz, a member of the Austrian Parliament from the Austrian Green Party, demanded that Parliament revoke Schwarzenegger's Austrian citizenship due to his decision not to prevent the executions of Donald Beardslee and Stanley Williams, causing damage of reputation to Austria, where the death penalty has been abolished since 1968. This demand was based on Article 33 of the Austrian Citizenship Act that states: "A citizen, who is in the public service of a foreign country, shall be deprived of his citizenship, if he heavily damages the reputation or the interests of the Austrian Republic." Pilz claimed that Schwarzenegger's actions in support of the death penalty (prohibited in Austria under Protocol 13 of the European Convention on Human Rights) had indeed done damage to Austria's reputation. Schwarzenegger explained his actions by referring to the fact that his only duty as Governor of California was to prevent an error in the judicial system.
What year did Austria outlaw the death penalty?
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Answer: 1968

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
A major consideration was the possible Soviet reaction in the event that the US intervened. The Truman administration was fretful that a war in Korea was a diversionary assault that would escalate to a general war in Europe once the United States committed in Korea. At the same time, "[t]here was no suggestion from anyone that the United Nations or the United States could back away from [the conflict]". Yugoslaviaa possible Soviet target because of the Tito-Stalin Splitwas vital to the defense of Italy and Greece, and the country was first on the list of the National Security Council's post-North Korea invasion list of "chief danger spots". Truman believed if aggression went unchecked a chain reaction would be initiated that would marginalize the United Nations and encourage Communist aggression elsewhere. The UN Security Council approved the use of force to help the South Koreans and the US immediately began using what air and naval forces that were in the area to that end. The Administration still refrained from committing on the ground because some advisers believed the North Koreans could be stopped by air and naval power alone.
What agency approved the use of force in South Korea?
A: The UN Security Council

Context and question: Suddhodana was determined to see his son become a king, so he prevented him from leaving the palace grounds. But at age 29, despite his father's efforts, Gautama ventured beyond the palace several times. In a series of encountersknown in Buddhist literature as the four sightshe learned of the suffering of ordinary people, encountering an old man, a sick man, a corpse and, finally, an ascetic holy man, apparently content and at peace with the world. These experiences prompted Gautama to abandon royal life and take up a spiritual quest.
What did Buddha's father want him to become?
Answer: a king

Question: With the abatement of persecution, St. Jerome acknowledged the Empire as a bulwark against evil but insisted that "imperial honours" were contrary to Christian teaching. His was an authoritative but minority voice: most Christians showed no qualms in the veneration of even "pagan" emperors. The peace of the emperors was the peace of God; as far as the Church was concerned, internal dissent and doctrinal schism were a far greater problem. The solution came from a hitherto unlikely source: as pontifex maximus Constantine I favoured the "Catholic Church of the Christians" against the Donatists because:
Is there an answer to this question: What pontifax maximus favored the Catholic church?

Answer: Constantine I

Some devices, such as high-speed external disk drives, require more than 500 mA of current and therefore may have power issues if powered from just one USB 2.0 port: erratic function, failure to function, or overloading/damaging the port. Such devices may come with an external power source or a Y-shaped cable that has two USB connectors (one for power and data, the other for power only) to plug into a computer. With such a cable, a device can draw power from two USB ports simultaneously. However, USB compliance specification states that "use of a 'Y' cable (a cable with two A-plugs) is prohibited on any USB peripheral", meaning that "if a USB peripheral requires more power than allowed by the USB specification to which it is designed, then it must be self-powered."
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is an issue that may occur if a high-speed external disk drive is powered from just one USB 2.0 port.
Ah, so..
may have power issues