The problem: Answer a question about this article:
The Total Force Policy was adopted by Chief of Staff of the Army General Creighton Abrams in the aftermath of the Vietnam War and involves treating the three components of the army – the Regular Army, the Army National Guard and the Army Reserve as a single force. Believing that no U.S. president should be able to take the United States (and more specifically the U.S. Army) to war without the support of the American people, General Abrams intertwined the structure of the three components of the army in such a way as to make extended operations impossible, without the involvement of both the Army National Guard and the Army Reserve.
What war was responsible for the creation of the Total Force Policy?
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The answer: Vietnam War


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The discovery of infrared radiation is ascribed to William Herschel, the astronomer, in the early 19th century. Herschel published his results in 1800 before the Royal Society of London. Herschel used a prism to refract light from the sun and detected the infrared, beyond the red part of the spectrum, through an increase in the temperature recorded on a thermometer. He was surprised at the result and called them "Calorific Rays". The term 'Infrared' did not appear until late in the 19th century.
What device did Herschel use to discover the infrared?
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The answer: a prism


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Communal shelters never housed more than one seventh of Greater London residents, however. Peak use of the Underground as shelter was 177,000 on 27 September 1940, and a November 1940 census of London found that about 4% of residents used the Tube and other large shelters; 9% in public surface shelters; and 27% in private home shelters, implying that the remaining 60% of the city likely stayed at home. The government distributed Anderson shelters until 1941 and that year began distributing the Morrison shelter, which could be used inside homes.:190
Where did 60% of populations stay?
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The answer: at home


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Several political figures who served as Zhejiang's top political office of Communist Party Secretary have played key roles in various events in PRC history. Tan Zhenlin (term 1949-1952), the inaugural Party Secretary, was one of the leading voices against Mao's Cultural Revolution during the so-called February Countercurrent of 1967. Jiang Hua (term 1956-1968), was the "chief justice" on the Special Court in the case against the Gang of Four in 1980. Three provincial Party Secretaries since the 1990s have gone onto prominence at the national level. They include CPC General Secretary and President Xi Jinping (term 2002-2007), National People's Congress Chairman and former Vice-Premier Zhang Dejiang (term 1998-2002), and Zhao Hongzhu (term 2007-2012), the Deputy Secretary of the Central Commission for Discipline Inspection, China's top anti-corruption body. Of Zhejiang's fourteen Party Secretaries since 1949, none were native to the province.
When was the so-called February Countercurrent?
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The answer:
1967