The problem: Answer a question about this article:
BBC, in 2012, accused Glencore of using child labour in its mining and smelting operations of Africa. Glencore denied it used child labour, and said it has strict policy of not using child labour. The company claimed it has a strict policy whereby all copper was mined correctly, placed in bags with numbered seals and then sent to the smelter. Glencore mentioned being aware of child miners who were part of a group of artisanal miners who had without authorisation raided the concession awarded to the company since 2010; Glencore has been pleading with the government to remove the artisanal miners from the concession.
What did the BBC say that Glencore used child labour for in 2012?
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The answer: mining and smelting operations of Africa

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The Vietnam War is often regarded as a low point for the U.S. Army due to the use of drafted personnel, the unpopularity of the war with the American public, and frustrating restrictions placed on the military by American political leaders. While American forces had been stationed in the Republic of Vietnam since 1959, in intelligence & advising/training roles, they did not deploy in large numbers until 1965, after the Gulf of Tonkin Incident. American forces effectively established and maintained control of the "traditional" battlefield, however they struggled to counter the guerrilla hit and run tactics of the communist Viet Cong and the North Vietnamese Army. On a tactical level, American soldiers (and the U.S. military as a whole) did not lose a sizable battle.
What year did American forces start being stationed in Vietnam?
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The answer: 1959

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The roots of Greek success in the Ottoman Empire can be traced to the Greek tradition of education and commerce. It was the wealth of the extensive merchant class that provided the material basis for the intellectual revival that was the prominent feature of Greek life in the half century and more leading to the outbreak of the Greek War of Independence in 1821. Not coincidentally, on the eve of 1821, the three most important centres of Greek learning were situated in Chios, Smyrna and Aivali, all three major centres of Greek commerce. Greek success was also favoured by Greek domination of the Christian Orthodox church.
What three cities were imperative for the scholarly and economic exchanges ?
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The answer: the three most important centres of Greek learning were situated in Chios, Smyrna and Aivali, all three major centres of Greek commerce

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The use of time is an important issue in understanding human behavior, education, and travel behavior. Time-use research is a developing field of study. The question concerns how time is allocated across a number of activities (such as time spent at home, at work, shopping, etc.). Time use changes with technology, as the television or the Internet created new opportunities to use time in different ways. However, some aspects of time use are relatively stable over long periods of time, such as the amount of time spent traveling to work, which despite major changes in transport, has been observed to be about 2030 minutes one-way for a large number of cities over a long period.
The use of time is important in understanding what?
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The answer:
human behavior, education, and travel behavior