Problem: After the September 2011 execution of Troy Davis, believed by many to be innocent, Richard Dieter, the director of the Death Penalty Information Center, said this case was a clear wake-up call to politicians across the United States. He said: "They weren't expecting such passion from people in opposition to the death penalty. There's a widely held perception that all Americans are united in favor of executions, but this message came across loud and clear that many people are not happy with it." Brian Evans of Amnesty International, which led the campaign to spare Davis's life, said that there was a groundswell in America of people "who are tired of a justice system that is inhumane and inflexible and allows executions where there is clear doubts about guilt". He predicted the debate would now be conducted with renewed energy.
 Who was the Death Penalty Information Center secretary?
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Answer: unanswerable


Problem: Alloys of primarily zinc with small amounts of copper, aluminium, and magnesium are useful in die casting as well as spin casting, especially in the automotive, electrical, and hardware industries. These alloys are marketed under the name Zamak. An example of this is zinc aluminium. The low melting point together with the low viscosity of the alloy makes the production of small and intricate shapes possible. The low working temperature leads to rapid cooling of the cast products and therefore fast assembly is possible. Another alloy, marketed under the brand name Prestal, contains 78% zinc and 22% aluminium and is reported to be nearly as strong as steel but as malleable as plastic. This superplasticity of the alloy allows it to be molded using die casts made of ceramics and cement.
Aside from die casting, what are alloys of zinc mixed with copper, aluminium and magnesium used for?
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Answer: spin casting


Problem: Vinson Massif, the highest peak in Antarctica at 4,892 m (16,050 ft), is located in the Ellsworth Mountains. Antarctica contains many other mountains, on both the main continent and the surrounding islands. Mount Erebus on Ross Island is the world's southernmost active volcano. Another well-known volcano is found on Deception Island, which is famous for a giant eruption in 1970. Minor eruptions are frequent and lava flow has been observed in recent years. Other dormant volcanoes may potentially be active. In 2004, a potentially active underwater volcano was found in the Antarctic Peninsula by American and Canadian researchers.
What is the highest peak in Antarctica at 4,892 ft?
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Answer:
unanswerable