Problem: Pharmaceutical industry:

By the 1890s the profound effect of adrenal extracts on many different tissue types had been discovered, setting off a search both for the mechanism of chemical signalling and efforts to exploit these observations for the development of new drugs. The blood pressure raising and vasoconstrictive effects of adrenal extracts were of particular interest to surgeons as hemostatic agents and as treatment for shock, and a number of companies developed products based on adrenal extracts containing varying purities of the active substance. In 1897 John Abel of Johns Hopkins University identified the active principle as epinephrine, which he isolated in an impure state as the sulfate salt. Industrial chemist Jokichi Takamine later developed a method for obtaining epinephrine in a pure state, and licensed the technology to Parke Davis. Parke Davis marketed epinephrine under the trade name Adrenalin. Injected epinephrine proved to be especially efficacious for the acute treatment of asthma attacks, and an inhaled version was sold in the United States until 2011 (Primatene Mist). By 1929 epinephrine had been formulated into an inhaler for use in the treatment of nasal congestion.

Who developed the method to obtain epinephrine in a pure state?
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A: Jokichi Takamine

Problem: In 1814, a secret organization called the Filiki Eteria (Society of Friends) was founded with the aim of liberating Greece. The Filiki Eteria planned to launch revolution in the Peloponnese, the Danubian Principalities and Constantinople. The first of these revolts began on 6 March 1821 in the Danubian Principalities under the leadership of Alexandros Ypsilantis, but it was soon put down by the Ottomans. The events in the north spurred the Greeks of the Peloponnese into action and on 17 March 1821 the Maniots declared war on the Ottomans.
The Society of Friends was also known by what name?
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Answer: Filiki Eteria

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Following the glass batch preparation and mixing, the raw materials are transported to the furnace. Soda-lime glass for mass production is melted in gas fired units. Smaller scale furnaces for specialty glasses include electric melters, pot furnaces, and day tanks. After melting, homogenization and refining (removal of bubbles), the glass is formed. Flat glass for windows and similar applications is formed by the float glass process, developed between 1953 and 1957 by Sir Alastair Pilkington and Kenneth Bickerstaff of the UK's Pilkington Brothers, who created a continuous ribbon of glass using a molten tin bath on which the molten glass flows unhindered under the influence of gravity. The top surface of the glass is subjected to nitrogen under pressure to obtain a polished finish. Container glass for common bottles and jars is formed by blowing and pressing methods. This glass is often slightly modified chemically (with more alumina and calcium oxide) for greater water resistance. Further glass forming techniques are summarized in the table Glass forming techniques.
What happens during refining?
A: removal of bubbles

Context and question: Queen drew artistic influence from British rock acts of the 1960s and early 1970s, such as the Beatles, the Kinks, Cream, Led Zeppelin, Pink Floyd, the Who, Black Sabbath, Slade, Deep Purple, David Bowie, Genesis and Yes, in addition to American guitarist Jimi Hendrix, with Mercury also inspired by the gospel singer Aretha Franklin. May referred to the Beatles as being "our bible in the way they used the studio and they painted pictures and this wonderful instinctive use of harmonies." At their outset in the early 1970s, Queen's music has been characterised as "Led Zeppelin meets Yes" due to its combination of "acoustic/electric guitar extremes and fantasy-inspired multi-part song epics".
What gospel singer did Freddie Mercury cite as an inspiration?
Answer: Aretha Franklin

Question: Bern has a population of 140,634 people and 34% of the population are resident foreign nationals. Over the 10 years between 2000 and 2010, the population changed at a rate of 0.6%. Migration accounted for 1.3%, while births and deaths accounted for 2.1%.
Is there an answer to this question: What was the population change from 2000 and 2010?

Answer: .6%

Problem: Sumer:

This period is generally taken to coincide with a major shift in population from southern Mesopotamia toward the north. Ecologically, the agricultural productivity of the Sumerian lands was being compromised as a result of rising salinity. Soil salinity in this region had been long recognized as a major problem. Poorly drained irrigated soils, in an arid climate with high levels of evaporation, led to the buildup of dissolved salts in the soil, eventually reducing agricultural yields severely. During the Akkadian and Ur III phases, there was a shift from the cultivation of wheat to the more salt-tolerant barley, but this was insufficient, and during the period from 2100 BC to 1700 BC, it is estimated that the population in this area declined by nearly three fifths. This greatly upset the balance of power within the region, weakening the areas where Sumerian was spoken, and comparatively strengthening those where Akkadian was the major language. Henceforth Sumerian would remain only a literary and liturgical language, similar to the position occupied by Latin in medieval Europe.

The salinity of what in the region was long recognized as a major problem?
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A:
Soil