Problem: Tajikistan means the "Land of the Tajiks". The suffix "-stan" (Persian: ـستان‎‎ -stān) is Persian for "place of" or "country" and Tajik is, most likely, the name of a pre-Islamic (before the seventh century A.D.) tribe. According to the Library of Congress's 1997 Country Study of Tajikistan, it is difficult to definitively state the origins of the word "Tajik" because the term is "embroiled in twentieth-century political disputes about whether Turkic or Iranian peoples were the original inhabitants of Central Asia."
Where did the word Tajik come from?
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Answer: the name of a pre-Islamic (before the seventh century A.D.) tribe


Problem: Victoria's youngest son, Leopold, was affected by the blood-clotting disease haemophilia B and two of her five daughters, Alice and Beatrice, were carriers. Royal haemophiliacs descended from Victoria included her great-grandsons, Tsarevich Alexei of Russia, Alfonso, Prince of Asturias, and Infante Gonzalo of Spain. The presence of the disease in Victoria's descendants, but not in her ancestors, led to modern speculation that her true father was not the Duke of Kent but a haemophiliac. There is no documentary evidence of a haemophiliac in connection with Victoria's mother, and as male carriers always suffer the disease, even if such a man had existed he would have been seriously ill. It is more likely that the mutation arose spontaneously because Victoria's father was over 50 at the time of her conception and haemophilia arises more frequently in the children of older fathers. Spontaneous mutations account for about a third of cases.
What is a big factor on whether or not an offspring will spontaneously develop haemophilia?
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Answer: older fathers


Problem: Over the course of 2013, the corporation began the sale of its US shale gas assets and cancelled a US$20 billion gas project that was to be constructed in the US state of Louisiana. A new CEO Ben van Beurden was appointed in January 2014, prior to the announcement that the corporation's overall performance in 2013 was 38 per cent lower than 2012—the value of Shell's shares fell by 3 per cent as a result. Following the sale of the majority of its Australian assets in February 2014, the corporation plans to sell a further US$15 billion worth of assets in the period leading up to 2015, with deals announced in Australia, Brazil and Italy.
What was the value of assets the corporation planned to sell leading up to 2015?
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Answer:
US$15 billion