Problem: Please answer a question about the following article about Green:
Many minerals provide pigments which have been used in green paints and dyes over the centuries. Pigments, in this case, are minerals which reflect the color green, rather that emitting it through luminescent or phosphorescent qualities. The large number of green pigments makes it impossible to mention them all. Among the more notable green minerals, however is the emerald, which is colored green by trace amounts of chromium and sometimes vanadium. Chromium(III) oxide (Cr2O3), is called chrome green, also called viridian or institutional green when used as a pigment. For many years, the source of amazonite's color was a mystery. Widely thought to have been due to copper because copper compounds often have blue and green colors, the blue-green color is likely to be derived from small quantities of lead and water in the feldspar. Copper is the source of the green color in malachite pigments, chemically known as basic copper(II) carbonate.
What is the source of the green color in malachite pigments?
A: Copper
Problem: Please answer a question about the following article about Royal assent:
Royal assent is the method by which a country's constitutional monarch (possibly through a delegated official) formally approves an act of that nation's parliament, thus making it a law or letting it be promulgated as law. In the vast majority of contemporary monarchies, this act is considered to be little more than a formality; even in those nations which still permit their ruler to withhold the royal assent (such as the United Kingdom, Norway, and Liechtenstein), the monarch almost never does so, save in a dire political emergency or upon the advice of their government. While the power to withhold royal assent was once exercised often in European monarchies, it is exceedingly rare in the modern, democratic political atmosphere that has developed there since the 18th century.
Under what circumstances does a monarch typically use the royal assent?
A: a dire political emergency or upon the advice of their government
Problem: Please answer a question about the following article about 2008 Summer Olympics torch relay:
Following the events in Olympia, there were reports that China requested permission to deploy People's Liberation Army personnel along the relay route to protect the flame in Canberra. Australian authorities stated that such a request, if it were to be made, would be refused. Chinese officials labeled it a rumor. Australian police have been given powers to search relay spectators, following a call by the Chinese Students and Scholars Association for Chinese Australian students to "go defend our sacred torch" against "ethnic degenerate scum and anti-China separatists". Tony Goh, chairman of the Australian Council of Chinese Organisations, has said the ACCO would be taking "thousands" of pro-Beijing demonstrators to Canberra by bus, to support the torch relay. Zhang Rongan, a Chinese Australian student organising pro-Beijing demonstrations, told the press that Chinese diplomats were assisting with the organization of buses, meals and accommodation for pro-Beijing demonstrators, and helping them organise a "peaceful show of strength". Foreign Minister Stephen Smith said Chinese officials were urging supporters to "turn up and put a point of view", but that he had no objection to it as long as they remained peaceful.
Who said that thousands of pro-Beijing supporters would be bused in?
A: Tony Goh
Problem: Please answer a question about the following article about Military history of the United States:
The loss of eight battleships and 2,403 Americans at Pearl Harbor forced the U.S. to rely on its remaining aircraft carriers, which won a major victory over Japan at Midway just six months into the war, and on its growing submarine fleet. The Navy and Marine Corps followed this up with an island hopping campaign across the central and south Pacific in 194345, reaching the outskirts of Japan in the Battle of Okinawa. During 1942 and 1943, the U.S. deployed millions of men and thousands of planes and tanks to the UK, beginning with the strategic bombing of Nazi Germany and occupied Europe and leading up to the Allied invasions of occupied North Africa in November 1942, Sicily and Italy in 1943, France in 1944, and the invasion of Germany in 1945, parallel with the Soviet invasion from the east. That led to the surrender of Nazi Germany in May 1945. In the Pacific, the U.S. experienced much success in naval campaigns during 1944, but bloody battles at Iwo Jima and Okinawa in 1945 led the U.S. to look for a way to end the war with minimal loss of American lives. The U.S. used atomic bombs on Hiroshima and Nagasaki to destroy the Japanese war effort and to shock the Japanese leadership, which quickly caused the surrender of Japan.
When did the Allies invade North Africa?
A:
1942