Input: Printed circuit board
Electrochemical migration (ECM) is the growth of conductive metal filaments on or in a printed circuit board (PCB) under the influence of a DC voltage bias. Silver, zinc, and aluminum are known to grow whiskers under the influence of an electric field. Silver also grows conducting surface paths in the presence of halide and other ions, making it a poor choice for electronics use. Tin will grow "whiskers" due to tension in the plated surface. Tin-Lead or solder plating also grows whiskers, only reduced by the percentage Tin replaced. Reflow to melt solder or tin plate to relieve surface stress lowers whisker incidence. Another coating issue is tin pest, the transformation of tin to a powdery allotrope at low temperature.

Along with silver and aluminum, what metal grows metal filaments when exposed to an electric field?
Output: zinc


Input: Article: In the 1920s and 1930s, air power theorists Giulio Douhet and Billy Mitchell espoused the idea that air forces could win wars by themselves, without a need for land and sea fighting. It was thought there was no defence against air attack, particularly at night. Enemy industry, their seats of government, factories and communications could be destroyed, effectively taking away their means to resist. It was also thought the bombing of residential centres would cause a collapse of civilian will, which might have led to the collapse of production and civil life. Democracies, where the populace was allowed to show overt disapproval of the ruling government, were thought particularly vulnerable. This thinking was prevalent in both the RAF and what was then known as the United States Army Air Corps (USAAC) between the two world wars. RAF Bomber Command's policy in particular would attempt to achieve victory through the destruction of civilian will, communications and industry.

Now answer this question: What kind of populace was believed to be most vulnerable?

Output: Democracies


Article: Drinks especially high in simple sugars, such as soft drinks and fruit juices, are not recommended in children under 5 years of age as they may increase dehydration. A too rich solution in the gut draws water from the rest of the body, just as if the person were to drink sea water. Plain water may be used if more specific and effective ORT preparations are unavailable or are not palatable. Additionally, a mix of both plain water and drinks perhaps too rich in sugar and salt can alternatively be given to the same person, with the goal of providing a medium amount of sodium overall. A nasogastric tube can be used in young children to administer fluids if warranted.

Question: What are not recommended for younger kids because it can casue more dehydration?
Ans: Drinks especially high in simple sugars, such as soft drinks and fruit juices


Here is a question about this article: The Watch Tower Society rejects accusations that it is a false prophet, stating that its teachings are not inspired or infallible, and that it has not claimed its predictions were "the words of Jehovah." George D. Chryssides has suggested that with the exception of statements about 1914, 1925 and 1975, the changing views and dates of the Jehovah's Witnesses are largely attributable to changed understandings of biblical chronology than to failed predictions. Chryssides further states, "it is therefore simplistic and naïve to view the Witnesses as a group that continues to set a single end-date that fails and then devise a new one, as many counter-cultists do." However, sociologist Andrew Holden states that since the foundation of the movement around 140 years ago, "Witnesses have maintained that we are living on the precipice of the end of time."
What is the answer to this question: What does George D. Chryssides suggest the changing views and dates of the Jehovah's Witnesses can be attributed to changed understandings of?
****
So... biblical chronology


The problem: Answer a question about this article:
From the early Qing, the central government was characterized by a system of dual appointments by which each position in the central government had a Manchu and a Han Chinese assigned to it. The Han Chinese appointee was required to do the substantive work and the Manchu to ensure Han loyalty to Qing rule. The distinction between Han Chinese and Manchus extended to their court costumes. During the Qianlong Emperor's reign, for example, members of his family were distinguished by garments with a small circular emblem on the back, whereas Han officials wore clothing with a square emblem.
What shape of emblem signified a Han official?
****
The answer: square emblem


The problem: Answer a question about this article:
According to FIG rules, only women compete in rhythmic gymnastics. This is a sport that combines elements of ballet, gymnastics, dance, and apparatus manipulation. The sport involves the performance of five separate routines with the use of five apparatus; ball, ribbon, hoop, clubs, rope—on a floor area, with a much greater emphasis on the aesthetic rather than the acrobatic. There are also group routines consisting of 5 gymnasts and 5 apparatuses of their choice. Rhythmic routines are scored out of a possible 30 points; the score for artistry (choreography and music) is averaged with the score for difficulty of the moves and then added to the score for execution.
What is the maximum number of points possible for a rhythmic gymnastic routine?
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The answer:
30