entrigna/custom-qa-v2-test-ds huggingface dataset:
Context: 

In 1870, at age 23, Bell, his brother's widow, Caroline (Margaret Ottaway), and his parents travelled on the SS Nestorian to Canada. After landing at Quebec City the Bells transferred to another steamer to Montreal and then boarded a train to Paris, Ontario, to stay with the Reverend Thomas Henderson, a family friend. After a brief stay with the Hendersons, the Bell family purchased a farm of 10.5 acres (42,000 m2) at Tutelo Heights (now called Tutela Heights), near Brantford, Ontario. The property consisted of an orchard, large farm house, stable, pigsty, hen-house, and a carriage house, which bordered the Grand River.[N 9]

---

Question: In what Canadian city did Bell first arrive?
Answer: Quebec City.
Context: 

The approaching era of jet travel, and a series of midair collisions (most notable was the 1956 Grand Canyon mid-air collision), prompted passage of the Federal Aviation Act of 1958. This legislation gave the CAA's functions to a new independent body, the Federal Aviation Agency. The act transferred air safety regulation from the CAB to the new FAA, and also gave the FAA sole responsibility for a common civil-military system of air navigation and air traffic control. The FAA's first administrator, Elwood R. Quesada, was a former Air Force general and adviser to President Eisenhower.

---

Question: What agency would now act like the CAA?
Answer: Federal Aviation Agency.
Context: 

iPods have also gained popularity for use in education. Apple offers more information on educational uses for iPods on their website, including a collection of lesson plans. There has also been academic research done in this area in nursing education and more general K-16 education. Duke University provided iPods to all incoming freshmen in the fall of 2004, and the iPod program continues today with modifications. Entertainment Weekly put it on its end-of-the-decade, "best-of" list, saying, "Yes, children, there really was a time when we roamed the earth without thousands of our favorite jams tucked comfortably into our hip pockets. Weird."

---

Question: Which magazine placed the iPod on its Best of the Decade list for the 00's?
Answer: Entertainment Weekly.
Context: 

Apart from residences for upper and middle class households, sanitation is insufficient in most residential areas. Private flush toilets are too expensive for virtually all residents in townships due to their water consumption and installation cost. As a result, access to improved sanitation has not increased much since independence: In Namibia's rural areas 13% of the population had more than basic sanitation, up from 8% in 1990. Many of Namibia's inhabitants have to resort to "flying toilets", plastic bags to defecate which after use are flung into the bush. The use of open areas close to residential land to urinate and defecate is very common and has been identified as a major health hazard.

---

Question: Where do flying toilets end up after use?
Answer: bush.
Context: 

Professional wrestling in the U.S. tends to have a heavy focus on story building and the establishment of characters (and their personalities). There is a story for each match, and even a longer story for successive matches. The stories usually contain characters like faces and heels, and less often antiheroes and tweeners. It is a "triumph" if the face wins, while it is a "tragedy" if the heel wins. The characters usually have strong and sharp personalities, with examples like Doink the Clown, whose personality is melodramatic, slapstick and fantastical. The opposition between faces and heels is very intense in the story, and the heels may even attack the faces during TV interviews. The relationship between different characters can also be very complex.

---

Question: What does every match have?
Answer: a story.
Context: 

The region was dominated by Bantu-speaking tribes, who built trade links leading into the Congo River basin. Congo-Brazzaville was formerly part of the French colony of Equatorial Africa. Upon independence in 1960, the former colony of French Congo became the Republic of the Congo. The People's Republic of the Congo was a Marxist–Leninist one-party state from 1970 to 1991. Multi-party elections have been held since 1992, although a democratically elected government was ousted in the 1997 Republic of the Congo Civil War and President Denis Sassou Nguesso has ruled for 26 of the past 36 years.

---

Question: When did the Congo gain its independence from colonial rule?
Answer: 1960.
Context: 

The Germanic languages are traditionally divided into three groups: West, East and North Germanic. They remained mutually intelligible throughout the Migration Period. Dutch is together with English and German part of the West Germanic group, that is characterized by a number of phonological and morphological innovations not found in North and East Germanic. The West Germanic varieties of the time are generally split into three dialect groups: Ingvaeonic (North Sea Germanic), Istvaeonic (Weser-Rhine Germanic) and Irminonic (Elbe Germanic). It appears that the Frankish tribes fit primarily into the Istvaeonic dialect group with certain Ingvaeonic influences towards the northwest, still seen in modern Dutch.

---

Question: In what historical period did the different types of Germanic languages stop being collectively understood?
Answer: the Migration Period.
Context: 

The continuing decline influenced further changes for season 14, including the loss of Coca-Cola as the show's major sponsor, and a decision to only broadcast one, two-hour show per week during the top 12 rounds (with results from the previous week integrated into the performance show, rather than having a separate results show). On May 11, 2015, prior to the fourteenth season finale, Fox announced that the fifteenth season of American Idol would be its last. Despite these changes, the show's ratings would decline more sharply. The fourteenth season finale was the lowest-rated finale ever, with an average of only 8.03 million viewers watching the finale.

---

Question: When did Fox announce the following season would be Idol's last?
Answer: May 11, 2015.
Context: 

Sony's PlayStation 3 has extensive HD compatibility because of its built in Blu-ray disc based player, so does Microsoft's Xbox 360 with the addition of Netflix and Windows Media Center HTPC streaming capabilities, and the Zune marketplace where users can rent or purchase digital HD content. Recently, Nintendo released a next generation high definition gaming platform, The Wii U, which includes TV remote control features in addition to IPTV streaming features like Netflix. The HD capabilities of the consoles has influenced some developers to port games from past consoles onto the PS3, Xbox 360 and Wii U, often with remastered or upscaled graphics.

---

Question: What high definition gaming platform did Nintendo recently release?
Answer: The Wii U.
Context: 

In Japan, the Mayor of Nagano, Shoichi Washizawa said that it has become a "great nuisance" for the city to host the torch relay prior to the Nagano leg. Washizawa's aides said the mayor's remark was not criticism about the relay itself but about the potential disruptions and confusion surrounding it.　A city employee of the Nagano City Office ridiculed the protests in Europe, he said "They are doing something foolish", in a televised interview. Nagano City officially apologized later and explained what he had wanted to say was "Such violent protests were not easy to accept". Also citing concerns about protests as well as the recent violence in Tibet, a major Buddhist temple in Nagano cancelled its plans to host the opening stage of the Olympic torch relay, this temple was vandalised by an un-identified person the day after in apparent revenge,

---

Question: Who was the mayor of Nagano?
Answer: Shoichi Washizawa.
Context: 

Since 2009, the Tucson Festival of Books has been held annually over a two-day period in March at the University of Arizona. By 2010 it had become the fourth largest book festival in the United States, with 450 authors and 80,000 attendees. In addition to readings and lectures, it features a science fair, varied entertainment, food, and exhibitors ranging from local retailers and publishers to regional and national nonprofit organizations. In 2011, the Festival began presenting a Founder's Award; recipients include Elmore Leonard and R.L. Stine.

---

Question: What award did the Tucson Festival of Books give to R. L. Stine?
Answer: Founder's Award.
Context: 

In the 19th century, the Tsarist Government of the Russian Empire claimed that Ukrainian was merely a dialect of Russian and not a language on its own. The differences were few and caused by the conquest of western Ukraine by the Polish-Lithuanian Commonwealth. However, the dialects in Ukraine eventually differed substantially from the dialects in Russia.

---

Question: The conquest of western Ukraine by what country altered the language of Ukraine?
Answer: Polish-Lithuanian Commonwealth.
Context: 

In response to the 2007 United States Air Force nuclear weapons incident, Secretary of Defense Robert Gates accepted in June 2009 the resignations of Secretary of the Air Force Michael Wynne and the Chief of Staff of the Air Force General T. Michael Moseley. Moseley's successor, General Norton A. Schwartz, a former tactical airlift and special operations pilot was the first officer appointed to that position who did not have a background as a fighter or bomber pilot. The Washington Post reported in 2010 that General Schwartz began to dismantle the rigid class system of the USAF, particularly in the officer corps.

---

Question: What newspaper reported on Schwartz's dismantlement of the US Air Force's class system?
Answer: The Washington Post.
Context: 

In 1922, the number of supporters had surpassed 20,000 and by lending money to the club, Barça was able to build the larger Camp de Les Corts, which had an initial capacity of 20,000 spectators. After the Spanish Civil War the club started attracting more members and a larger number of spectators at matches. This led to several expansion projects: the grandstand in 1944, the southern stand in 1946, and finally the northern stand in 1950. After the last expansion, Les Corts could hold 60,000 spectators.

---

Question: What was the number of team Barcelona supporters by 1922?
Answer: 20,000.
Context: 

The City Parliament (de: Stadtrat, fr: Conseil de ville) holds legislative power. It is made up of 80 members, with elections held every four years. The City Parliament decrees regulations and by-laws that are executed by the City Council and the administration. The delegates are selected by means of a system of proportional representation.

---

Question: How often are elections held for the City Parliament?
Answer: every four years..
Context: 

Polabian Slavs (Wends) settled in parts of England (Danelaw), apparently as Danish allies. Polabian-Pomeranian Slavs are also known to have even settled on Norse age Iceland. Saqaliba refers to the Slavic mercenaries and slaves in the medieval Arab world in North Africa, Sicily and Al-Andalus. Saqaliba served as caliph's guards. In the 12th century, there was intensification of Slavic piracy in the Baltics. The Wendish Crusade was started against the Polabian Slavs in 1147, as a part of the Northern Crusades. Niklot, pagan chief of the Slavic Obodrites, began his open resistance when Lothar III, Holy Roman Emperor, invaded Slavic lands. In August 1160 Niklot was killed and German colonization (Ostsiedlung) of the Elbe-Oder region began. In Hanoverian Wendland, Mecklenburg-Vorpommern and Lusatia invaders started germanization. Early forms of germanization were described by German monks: Helmold in the manuscript Chronicon Slavorum and Adam of Bremen in Gesta Hammaburgensis ecclesiae pontificum. The Polabian language survived until the beginning of the 19th century in what is now the German state of Lower Saxony. In Eastern Germany, around 20% of Germans have Slavic paternal ancestry. Similarly, in Germany, around 20% of the foreign surnames are of Slavic origin.

---

Question: Polabian-Pomeranian Slavs are also known to have even settled where?
Answer: Norse age Iceland.
Context: 

Dallin H. Oaks replaced Wilkinson as president in 1971. Oaks continued the expansion of his predecessor, adding a law school and proposing plans for a new School of Management. During his administration, a new library was also added, doubling the library space on campus. Jeffrey R. Holland followed as president in 1980, encouraging a combination of educational excellence and religious faith at the university. He believed that one of the school's greatest strengths was its religious nature and that this should be taken advantage of rather than hidden. During his administration, the university added a campus in Jerusalem, now called the BYU Jerusalem Center. In 1989, Holland was replaced by Rex E. Lee. Lee was responsible for the Benson Science Building and the Museum of Art on campus. A cancer victim, Lee is memorialized annually at BYU during a cancer fundraiser called the Rex Lee Run. Shortly before his death, Lee was replaced in 1995 by Merrill J. Bateman.

---

Question: What is the name of the BYU campus in Jerusulem?
Answer: BYU Jerusalem Center.
Context: 

The onset of symptoms in myocardial infarction (MI) is usually gradual, over several minutes, and rarely instantaneous. Chest pain is the most common symptom of acute MI and is often described as a sensation of tightness, pressure, or squeezing. Chest pain due to ischemia (a lack of blood and hence oxygen supply) of the heart muscle is termed angina pectoris. Pain radiates most often to the left arm, but may also radiate to the lower jaw, neck, right arm, back, and upper abdomen, where it may mimic heartburn. Levine's sign, in which a person localizes the chest pain by clenching their fists over their sternum, has classically been thought to be predictive of cardiac chest pain, although a prospective observational study showed it had a poor positive predictive value.

---

Question: What is a tell tale sign of someone experiencing a cardiac chest pain?
Answer: clenching their fists over their sternum.
Context: 

The Premier League is broadcast in the United States through NBC Sports. Premier League viewership has increased rapidly, with NBC and NBCSN averaging a record 479,000 viewers in the 2014–15 season, up 118% from 2012–13 when coverage still aired on Fox Soccer and ESPN/ESPN2 (220,000 viewers), and NBC Sports has been widely praised for its coverage. NBC Sports reached a six-year extension with the Premier League in 2015 to broadcast the league through the 2021–22 season in a deal valued at $1 billion (£640 million).

---

Question: Who broadcasts the Premier League's games in the United States?
Answer: The Premier League is broadcast in the United States through NBC Sports..
Context: 

Traditional sports include Swiss wrestling or "Schwingen". It is an old tradition from the rural central cantons and considered the national sport by some. Hornussen is another indigenous Swiss sport, which is like a cross between baseball and golf. Steinstossen is the Swiss variant of stone put, a competition in throwing a heavy stone. Practiced only among the alpine population since prehistoric times, it is recorded to have taken place in Basel in the 13th century. It is also central to the Unspunnenfest, first held in 1805, with its symbol the 83.5 kg stone named Unspunnenstein.

---

Question: Which old, traditional sport is considered to be the national sport by some Swiss?
Answer: Swiss wrestling or "Schwingen".
Context: 

The pain signal travels from the periphery to the spinal cord along an A-delta or C fiber. Because the A-delta fiber is thicker than the C fiber, and is thinly sheathed in an electrically insulating material (myelin), it carries its signal faster (5–30 m/s) than the unmyelinated C fiber (0.5–2 m/s). Pain evoked by the (faster) A-delta fibers is described as sharp and is felt first. This is followed by a duller pain, often described as burning, carried by the C fibers. These first order neurons enter the spinal cord via Lissauer's tract.

---

Question: What is the electrically insulting material that sheaths a-delta fiber?
Answer: myelin.
Context: 

Today, this term also refers to the doctrines and practices of the Reformed churches of which Calvin was an early leader. Less commonly, it can refer to the individual teaching of Calvin himself. The particulars of Calvinist theology may be stated in a number of ways. Perhaps the best known summary is contained in the five points of Calvinism, though these points identify the Calvinist view on soteriology rather than summarizing the system as a whole. Broadly speaking, Calvinism stresses the sovereignty or rule of God in all things — in salvation but also in all of life. This concept is seen clearly in the doctrines of predestination and total depravity.

---

Question: What is the most well-known summary of Calvin's teachings?
Answer: the five points of Calvinism.
Context: 

Nevertheless, the Fujiwara were not demoted by Daigo but actually became stronger during his reign. Central control of Japan had continued to decline, and the Fujiwara, along with other great families and religious foundations, acquired ever larger shōen and greater wealth during the early tenth century. By the early Heian period, the shōen had obtained legal status, and the large religious establishments sought clear titles in perpetuity, waiver of taxes, and immunity from government inspection of the shōen they held. Those people who worked the land found it advantageous to transfer title to shōen holders in return for a share of the harvest. People and lands were increasingly beyond central control and taxation, a de facto return to conditions before the Taika Reform.

---

Question: Farm laborers traded titles to shoen holders in exchange for what?
Answer: a share of the harvest.
Context: 

Since 2004, through the V&A + RIBA Architecture Partnership, the RIBA and V&A have worked together to promote the understanding and enjoyment of architecture.

---

Question: What is the main goal of the V&A + RIBA partnership?
Answer: to promote the understanding and enjoyment of architecture.
Context: 

In 2014, the airport received 15 new boarding bridges, totalling 28 in all. This was the main requirement made by the federal government, which transferred the operation of the terminal to the Inframerica Group after an auction. The group invested R$750 million in the project. In the same year, the number of parking spaces doubled, reaching three thousand. The airport's entrance have a new rooftop cover and a new access road. Furthermore, a VIP room was created on Terminal 1's third floor. The investments resulted an increase the capacity of Brasília's airport from approximately 15 million passengers per year to 21 million by 2014. Brasília has direct flights to all states of Brazil and direct international flights to Atlanta, Buenos Aires, Lisbon, Miami, Panama City, and Paris.

---

Question: What company now runs Brasilia's airport?
Answer: Inframerica Group.
Context: 

The Times's main supplement, every day, is the times2, featuring various lifestyle columns. It was discontinued on 1 March 2010 but reintroduced on 11 October 2010 after negative feedback. Its regular features include a puzzles section called Mind Games. Its previous incarnation began on 5 September 2005, before which it was called T2 and previously Times 2. Regular features include columns by a different columnist each weekday. There was a column by Marcus du Sautoy each Wednesday, for example. The back pages are devoted to puzzles and contain sudoku, "Killer Sudoku", "KenKen", word polygon puzzles, and a crossword simpler and more concise than the main "Times Crossword".

---

Question: What is the name of the sudoku game in The Times?
Answer: Killer Sudoku.
Context: 

International investment and the wealth generated by wealthy tourists explain the high standard of living on the island. St. Barthélemy is considered a playground of the rich and famous,[citation needed] especially as a winter haven, and is known for its beaches, gourmet dining and high-end designers. Most of the food is imported by airplane or boat from the US or France. Tourism attracts about 200,000 visitors every year. As a result, there is a boom in house building activity catering to the tourists and also to the permanent residents of the island, with prices as high as €61,200,000 for a beachfront villa.

---

Question: What besides investment is responsible for the high standard of living on the island?
Answer: wealth generated by wealthy tourists.
Context: 

Multiracial Americans are Americans who have mixed ancestry of "two or more races". The term may also include Americans of mixed-race ancestry who self-identify with just one group culturally and socially (cf. the one-drop rule). In the 2010 US census, approximately 9 million individuals, or 2.9% of the population, self-identified as multiracial. There is evidence that an accounting by genetic ancestry would produce a higher number, but people live according to social and cultural identities, not DNA. Historical reasons, including slavery creating a racial caste and the European-American suppression of Native Americans, often led people to identify or be classified by only one ethnicity, generally that of the culture in which they were raised. Prior to the mid-20th century, many people hid their multiracial heritage because of racial discrimination against minorities. While many Americans may be biologically multiracial, they often do not know it or do not identify so culturally, any more than they maintain all the differing traditions of a variety of national ancestries.

---

Question: Why did muticultural Americans hid their heritage?
Answer: many people hid their multiracial heritage because of racial discrimination against minorities.
Context: 

Political color schemes in the United States diverge from international norms. Since 2000, red has become associated with the right-wing Republican Party and blue with the left-wing Democratic Party. However, unlike political color schemes of other countries, the parties did not choose those colors; they were used in news coverage of 2000 election results and ensuing legal battle and caught on in popular usage. Prior to the 2000 election the media typically alternated which color represented which party each presidential election cycle. The color scheme happened to get inordinate attention that year, so the cycle was stopped lest it cause confusion the following election.

---

Question: Did the political parties choose those colors?
Answer: unlike political color schemes of other countries, the parties did not choose those colors.
Context: 

The Frankish kingdom in northern Gaul split into kingdoms called Austrasia, Neustria, and Burgundy during the 6th and 7th centuries, all of them ruled by the Merovingian dynasty, who were descended from Clovis. The 7th century was a tumultuous period of wars between Austrasia and Neustria. Such warfare was exploited by Pippin (d. 640), the Mayor of the Palace for Austrasia who became the power behind the Austrasian throne. Later members of his family inherited the office, acting as advisers and regents. One of his descendants, Charles Martel (d. 741), won the Battle of Poitiers in 732, halting the advance of Muslim armies across the Pyrenees.[K] Great Britain was divided into small states dominated by the kingdoms of Northumbria, Mercia, Wessex, and East Anglia, which were descended from the Anglo-Saxon invaders. Smaller kingdoms in present-day Wales and Scotland were still under the control of the native Britons and Picts. Ireland was divided into even smaller political units, usually known as tribal kingdoms, under the control of kings. There were perhaps as many as 150 local kings in Ireland, of varying importance.

---

Question: What was the title of Pippin?
Answer: Mayor of the Palace.
Context: 

The lowest pressure that can be attained in a system is also dependent on many things other than the nature of the pumps. Multiple pumps may be connected in series, called stages, to achieve higher vacuums. The choice of seals, chamber geometry, materials, and pump-down procedures will all have an impact. Collectively, these are called vacuum technique. And sometimes, the final pressure is not the only relevant characteristic. Pumping systems differ in oil contamination, vibration, preferential pumping of certain gases, pump-down speeds, intermittent duty cycle, reliability, or tolerance to high leakage rates.

---

Question: The choice of seals, or chamber geometry ,for example impact a pump. Together these are options are called what?
Answer: vacuum technique.
Context: 

With characteristic energy he set to work to re-establish the somewhat shattered fortunes of the orthodox party and to purge the theological atmosphere of uncertainty. To clear up the misunderstandings that had arisen in the course of the previous years, an attempt was made to determine still further the significance of the Nicene formularies. In the meanwhile, Julian, who seems to have become suddenly jealous of the influence that Athanasius was exercising at Alexandria, addressed an order to Ecdicius, the Prefect of Egypt, peremptorily commanding the expulsion of the restored primate, on the ground that he had never been included in the imperial act of clemency. The edict was communicated to the bishop by Pythicodorus Trico, who, though described in the "Chronicon Athanasianum" (XXXV) as a "philosopher", seems to have behaved with brutal insolence. On 23 October the people gathered about the proscribed bishop to protest against the emperor's decree; but Athanasius urged them to submit, consoling them with the promise that his absence would be of short duration.

---

Question: What position did Ecdicius hold?
Answer: Prefect of Egypt.
Context: 

In some cultures, insects, especially deep-fried cicadas, are considered to be delicacies, while in other places they form part of the normal diet. Insects have a high protein content for their mass, and some authors suggest their potential as a major source of protein in human nutrition.:10–13 In most first-world countries, however, entomophagy (the eating of insects), is taboo. Since it is impossible to entirely eliminate pest insects from the human food chain, insects are inadvertently present in many foods, especially grains. Food safety laws in many countries do not prohibit insect parts in food, but rather limit their quantity. According to cultural materialist anthropologist Marvin Harris, the eating of insects is taboo in cultures that have other protein sources such as fish or livestock.

---

Question: Where is eating insects considered taboo?
Answer: first-world countries.
Context: 

Cubism and modern European art was introduced into the United States at the now legendary 1913 Armory Show in New York City, which then traveled to Chicago and Boston. In the Armory show Pablo Picasso exhibited La Femme au pot de moutarde (1910), the sculpture Head of a Woman (Fernande) (1909–10), Les Arbres (1907) amongst other cubist works. Jacques Villon exhibited seven important and large drypoints, his brother Marcel Duchamp shocked the American public with his painting Nude Descending a Staircase, No. 2 (1912). Francis Picabia exhibited his abstractions La Danse à la source and La Procession, Seville (both of 1912). Albert Gleizes exhibited La Femme aux phlox (1910) and L'Homme au balcon (1912), two highly stylized and faceted cubist works. Georges Braque, Fernand Léger, Raymond Duchamp-Villon, Roger de La Fresnaye and Alexander Archipenko also contributed examples of their cubist works.

---

Question: Which 1907 piece did Picasso present in the show that introduced Cubism to the USA? 
Answer: Les Arbres.
Context: 

Between April 1877 and February 1878, she threatened five times to abdicate while pressuring Disraeli to act against Russia during the Russo-Turkish War, but her threats had no impact on the events or their conclusion with the Congress of Berlin. Disraeli's expansionist foreign policy, which Victoria endorsed, led to conflicts such as the Anglo-Zulu War and the Second Anglo-Afghan War. "If we are to maintain our position as a first-rate Power", she wrote, "we must ... be Prepared for attacks and wars, somewhere or other, CONTINUALLY." Victoria saw the expansion of the British Empire as civilising and benign, protecting native peoples from more aggressive powers or cruel rulers: "It is not in our custom to annexe countries", she said, "unless we are obliged & forced to do so." To Victoria's dismay, Disraeli lost the 1880 general election, and Gladstone returned as prime minister. When Disraeli died the following year, she was blinded by "fast falling tears", and erected a memorial tablet "placed by his grateful Sovereign and Friend, Victoria R.I."

---

Question: Who won the 1880 general election?
Answer: Gladstone.
Context: 

In 2000, the United Nations Development Programme, UN Department of Economic and Social Affairs, and World Energy Council published an estimate of the potential solar energy that could be used by humans each year that took into account factors such as insolation, cloud cover, and the land that is usable by humans. The estimate found that solar energy has a global potential of 1,575–49,837 EJ per year (see table below).

---

Question: What was the total potential of solar energy found in the estimate?
Answer: 1,575–49,837 EJ per year.
Context: 

Polyols, compounds containing more than one alcohol functional group, generally interact with cupric salts. For example, copper salts are used to test for reducing sugars. Specifically, using Benedict's reagent and Fehling's solution the presence of the sugar is signaled by a color change from blue Cu(II) to reddish copper(I) oxide. Schweizer's reagent and related complexes with ethylenediamine and other amines dissolve cellulose. Amino acids form very stable chelate complexes with copper(II). Many wet-chemical tests for copper ions exist, one involving potassium ferrocyanide, which gives a brown precipitate with copper(II) salts.

---

Question: What color does the copper salts turn to using Benedict's reagent and Fehling's solution if sugar is present?
Answer: reddish.
Context: 

In the beginning, the Quran did not have vocalization markings. The system of vocalization, as we know it today, seems to have been introduced towards the end of the ninth century. Since it would have been too costly for most Muslims to purchase a manuscript, copies of the Quran were held in mosques in order to make them accessible to people. These copies frequently took the form of a series of 30 parts or juzʼ. In terms of productivity, the Ottoman copyists provide the best example. This was in response to widespread demand, unpopularity of printing methods and for aesthetic reasons.

---

Question: Which group of Quran copyists produced the most in-demand manuscripts?
Answer: Ottoman.
Context: 

Outdoor events and festivals are held including the annual British Firework Championships in August, which attracts tens of thousands of people across the waterfront. In August 2006 the world record for the most amount of simultaneous fireworks was surpassed, by Roy Lowry of the University of Plymouth, over Plymouth Sound. Since 1992 the Music of the Night has been performed in the Royal Citadel by the 29 Commando Regiment and local performers to raise money for local and military charities.

---

Question: In what year did the Music of the Night begin?
Answer: 1992.
Context: 

The Forbes 400 survey estimated in 2004 that Teresa Heinz Kerry had a net worth of $750 million. However, estimates have frequently varied, ranging from around $165 million to as high as $3.2 billion, according to a study in the Los Angeles Times. Regardless of which figure is correct, Kerry was the wealthiest U.S. Senator while serving in the Senate. Independent of Heinz, Kerry is wealthy in his own right, and is the beneficiary of at least four trusts inherited from Forbes family relatives, including his mother, Rosemary Forbes Kerry, who died in 2002. Forbes magazine (named for the Forbes family of publishers, unrelated to Kerry) estimated that if elected, and if Heinz family assets were included, Kerry would have been the third-richest U.S. President in history, when adjusted for inflation. This assessment was based on Heinz and Kerry's combined assets, but the couple signed a prenuptial agreement that keeps their assets separate. Kerry's financial disclosure form for 2011 put his personal assets in the range of $230,000,000 to $320,000,000, including the assets of his spouse and any dependent children. This included slightly more than three million dollars worth of H. J. Heinz Company assets, which increased in value by over six hundred thousand dollars in 2013 when Berkshire Hathaway announced their intention to purchase the company.

---

Question: What range of estimates have been given for Teresa Heinz Kerry's net worth?
Answer: from around $165 million to as high as $3.2 billion.
Context: 

In the former Soviet Union, electric traction eventually became somewhat more energy-efficient than diesel. Partly due to inefficient generation of electricity in the USSR (only 20.8% thermal efficiency in 1950 vs. 36.2% in 1975), in 1950 diesel traction was about twice as energy efficient as electric traction (in terms of net tonne-km of freight per kg of fuel). But as efficiency of electricity generation (and thus of electric traction) improved, by about 1965 electric railways became more efficient than diesel. After the mid 1970s electrics used about 25% less fuel per ton-km. However diesels were mainly used on single track lines with a fair amount of traffic  so that the lower fuel consumption of electrics may be in part due to better operating conditions on electrified lines (such as double tracking) rather than inherent energy efficiency. Nevertheless, the cost of diesel fuel was about 1.5 times more (per unit of heat energy content) than that of the fuel used in electric power plants (that generated electricity), thus making electric railways even more energy-cost effective.

---

Question: What type of trains became more energy-efficient in the former Soviet Union?
Answer: electric.
Context: 

The Solís Theatre is Uruguay's oldest theatre. It was built in 1856 and is currently owned by the government of Montevideo. In 1998, the government of Montevideo started a major reconstruction of the theatre, which included two US$110,000 columns designed by Philippe Starck. The reconstruction was completed in 2004, and the theatre reopened in August of that year. The plaza is also the site of the offices of the President of Uruguay (both the Estévez Palace and the Executive Tower). The Artigas Mausoleum is located at the centre of the plaza. Statues include that of José Gervasio Artigas, hero of Uruguay's independence movement; an honour guard keeps vigil at the Mausoleum.

---

Question: Who owns The Solis Theater?
Answer: the government of Montevideo.
Context: 

Dell has been attempting to offset its declining PC business, which still accounted for half of its revenue and generates steady cash flow, by expanding into the enterprise market with servers, networking, software, and services. It avoided many of the acquisition writedowns and management turnover that plagued its chief rival Hewlett Packard. Dell also managed some success in taking advantage of its high-touch direct sales heritage to establish close relationships and design solutions for clients. Despite spending $13 billion on acquisitions to diversify its portfolio beyond hardware, the company was unable to convince the market that it could thrive or made the transformation in the post-PC world, as it suffered continued declines in revenue and share price. Dell's market share in the corporate segment was previously a "moat" against rivals but this has no longer been the case as sales and profits have fallen precipitously.

---

Question: How much of Dell's revenue was its PC division?
Answer: half.
Context: 

Within Shia Islam (Shiism), the various sects came into being because they differed over their Imams' successions, just as the Shia - Sunni separation within Islam itself had come into being from the dispute that had arisen over the succession to Muhammad. Each succession dispute brought forth a different tariqah (literal meaning 'path'; extended meaning 'sect') within Shia Islam. Each Shia tariqah followed its own particular Imam's dynasty, thus resulting in different numbers of Imams for each particular Shia tariqah. When the dynastic line of the separating successor Imam ended with no heir to succeed him, then either he (the last Imam) or his unborn successor was believed to have gone into concealment, that is, The Occultation.

---

Question: What does each Shia tariqah follow?
Answer: its own particular Imam's dynasty.
Context: 

The Democratic Party holds the majority of public offices. As of November 2008, 67% of registered voters in the city are Democrats. New York City has not been carried by a Republican in a statewide or presidential election since President Calvin Coolidge won the five boroughs in 1924. In 2012, Democrat Barack Obama became the first presidential candidate of any party to receive more than 80% of the overall vote in New York City, sweeping all five boroughs. Party platforms center on affordable housing, education, and economic development, and labor politics are of importance in the city.

---

Question: In November 2008, how many New Yorkers were registered as Democrats?
Answer: 67%.
Context: 

Tajikistan (i/tɑːˈdʒiːkᵻstɑːn/, /təˈdʒiːkᵻstæn/, or /tæˈdʒiːkiːstæn/; Persian: تاجيكستان‎‎ Тоҷикистон [tɔd͡ʒikɪsˈtɔn]), officially the Republic of Tajikistan (Persian: جمهورى تاجيكستان‎‎ Tajik: Ҷумҳурии Тоҷикистон, Çumhuriji Toçikiston/Jumhuriyi Tojikiston; Russian: Респу́блика Таджикистан, Respublika Tadzhikistan), is a mountainous, landlocked country in Central Asia with an estimated 8 million people in 2013, and an area of 143,100 km2 (55,300 sq mi). It is bordered by Afghanistan to the south, Uzbekistan to the west, Kyrgyzstan to the north, and China to the east. Pakistan lies to the south, separated by the narrow Wakhan Corridor. Traditional homelands of Tajik people included present-day Tajikistan, Afghanistan and Uzbekistan.

---

Question: What is the area of Tajikistan?
Answer: area of 143,100 km2 (55,300 sq mi).
Context: 

This first list is referred to as the "Class of '67" in The Endangered Species Act at Thirty, Volume 1, which concludes that habitat destruction, the biggest threat to those 78 species, is still the same threat to the currently listed species. It included only vertebrates because the Department of Interior's definition of "fish and wildlife" was limited to vertebrates. However, with time, researchers noticed that the animals on the endangered species list still were not getting enough protection, thus further threatening their extinction. The endangered species program was expanded by the Endangered Species Act of 1969.

---

Question: What was concluded to be the biggest threat to the listed species?
Answer: habitat destruction.
Context: 

Dwight David "Ike" Eisenhower (/ˈaɪzənˌhaʊ.ər/ EYE-zən-HOW-ər; October 14, 1890 – March 28, 1969) was an American politician and general who served as the 34th President of the United States from 1953 until 1961. He was a five-star general in the United States Army during World War II and served as Supreme Commander of the Allied Forces in Europe. He was responsible for planning and supervising the invasion of North Africa in Operation Torch in 1942–43 and the successful invasion of France and Germany in 1944–45 from the Western Front. In 1951, he became the first Supreme Commander of NATO.

---

Question: What was the middle name of Dwight Eisenhower?
Answer: David.
Context: 

On November 17, 2014, Students for Fair Admissions, an offshoot of the Project on Fair Representation, filed lawsuits in federal district court challenging the admissions practices of Harvard University and the University of North Carolina at Chapel Hill. The UNC-Chapel Hill lawsuit alleges discrimination against white and Asian students, while the Harvard lawsuit focuses on discrimination against Asian applicants. Both universities requested the court to halt the lawsuits until the U.S. Supreme Court provides clarification of relevant law by ruling in Fisher v. University of Texas at Austin for the second time. This Supreme Court case will likely be decided in June 2016 or slightly earlier.

---

Question: What are the Universities waiting for before proceeding with the lawsuit?
Answer: until the U.S. Supreme Court provides clarification of relevant law.
Context: 

Efforts by local kings to fight the invaders led to the formation of new political entities. In Anglo-Saxon England, King Alfred the Great (r. 871–899) came to an agreement with the Viking invaders in the late 9th century, resulting in Danish settlements in Northumbria, Mercia, and parts of East Anglia. By the middle of the 10th century, Alfred's successors had conquered Northumbria, and restored English control over most of the southern part of Great Britain. In northern Britain, Kenneth MacAlpin (d. c. 860) united the Picts and the Scots into the Kingdom of Alba. In the early 10th century, the Ottonian dynasty had established itself in Germany, and was engaged in driving back the Magyars. Its efforts culminated in the coronation in 962 of Otto I (r. 936–973) as Holy Roman Emperor. In 972, he secured recognition of his title by the Byzantine Empire, which he sealed with the marriage of his son Otto II (r. 967–983) to Theophanu (d. 991), daughter of an earlier Byzantine Emperor Romanos II (r. 959–963). By the late 10th century Italy had been drawn into the Ottonian sphere after a period of instability; Otto III (r. 996–1002) spent much of his later reign in the kingdom. The western Frankish kingdom was more fragmented, and although kings remained nominally in charge, much of the political power devolved to the local lords.

---

Question: What was the kingdom of Kenneth MacAlpin?
Answer: the Kingdom of Alba.
Context: 

The company originated in 1911 as the Computing-Tabulating-Recording Company (CTR) through the consolidation of The Tabulating Machine Company, the International Time Recording Company, the Computing Scale Company and the Bundy Manufacturing Company. CTR was renamed "International Business Machines" in 1924, a name which Thomas J. Watson first used for a CTR Canadian subsidiary. The initialism IBM followed. Securities analysts nicknamed the company Big Blue for its size and common use of the color in products, packaging and its logo.

---

Question: What does IBM stand for?
Answer: International Business Machines.
Context: 

The ecumenical movement has had an influence on mainline churches, beginning at least in 1910 with the Edinburgh Missionary Conference. Its origins lay in the recognition of the need for cooperation on the mission field in Africa, Asia and Oceania. Since 1948, the World Council of Churches has been influential, but ineffective in creating a united church. There are also ecumenical bodies at regional, national and local levels across the globe; but schisms still far outnumber unifications. One, but not the only expression of the ecumenical movement, has been the move to form united churches, such as the Church of South India, the Church of North India, the US-based United Church of Christ, the United Church of Canada, the Uniting Church in Australia and the United Church of Christ in the Philippines which have rapidly declining memberships. There has been a strong engagement of Orthodox churches in the ecumenical movement, though the reaction of individual Orthodox theologians has ranged from tentative approval of the aim of Christian unity to outright condemnation of the perceived effect of watering down Orthodox doctrine.

---

Question: What have Orthodox churches condemned the perception of?
Answer: watering down Orthodox doctrine.
Context: 

In 1769 Hyderabad city became the formal capital of the Nizams. In response to regular threats from Hyder Ali (Dalwai of Mysore), Baji Rao I (Peshwa of the Maratha Empire), and Basalath Jung (Asif Jah II's elder brother, who was supported by the Marquis de Bussy-Castelnau), the Nizam signed a subsidiary alliance with the East India Company in 1798, allowing the British Indian Army to occupy Bolarum (modern Secunderabad) to protect the state's borders, for which the Nizams paid an annual maintenance to the British.

---

Question: Whom did the Nizam ally with in the late 18th century?
Answer: East India Company.
Context: 

The economy relies heavily on investment and support from Armenians abroad. Before independence, Armenia's economy was largely industry-based – chemicals, electronics, machinery, processed food, synthetic rubber, and textile – and highly dependent on outside resources. The republic had developed a modern industrial sector, supplying machine tools, textiles, and other manufactured goods to sister republics in exchange for raw materials and energy. Recently, the Intel Corporation agreed to open a research center in Armenia, in addition to other technology companies, signalling the growth of the technology industry in Armenia.

---

Question: As opposed to an industry-based economy, what industry is Armenia moving to?
Answer: technology industry.
Context: 

Early on, American courts, even after the Revolution, often did cite contemporary English cases. This was because appellate decisions from many American courts were not regularly reported until the mid-19th century; lawyers and judges, as creatures of habit, used English legal materials to fill the gap. But citations to English decisions gradually disappeared during the 19th century as American courts developed their own principles to resolve the legal problems of the American people. The number of published volumes of American reports soared from eighteen in 1810 to over 8,000 by 1910. By 1879 one of the delegates to the California constitutional convention was already complaining: "Now, when we require them to state the reasons for a decision, we do not mean they shall write a hundred pages of detail. We [do] not mean that they shall include the small cases, and impose on the country all this fine judicial literature, for the Lord knows we have got enough of that already."

---

Question: What century were apellate decisions regularly reported?
Answer: 19th century.
Context: 

Early reviews were mixed in their assessment. Ken Tucker of Entertainment Weekly considered that "As TV, American Idol is crazily entertaining; as music, it's dust-mote inconsequential". Others, however, thought that "the most striking aspect of the series was the genuine talent it revealed". It was also described as a "sadistic musical bake-off", and "a romp in humiliation". Other aspects of the show have attracted criticisms. The product placement in the show in particular was noted, and some critics were harsh about what they perceived as its blatant commercial calculations – Karla Peterson of The San Diego Union-Tribune charged that American Idol is "a conniving multimedia monster" that has "absorbed the sin of our debauched culture and spit them out in a lump of reconstituted evil". The decision to send the season one winner to sing the national anthem at the Lincoln Memorial on the first anniversary of the September 11 attacks in 2002 was also poorly received by many. Lisa de Moraes of The Washington Post noted sarcastically that "The terrorists have won" and, with a sideswipe at the show's commercialism and voting process, that the decision as to who "gets to turn this important site into just another cog in the 'Great American Idol Marketing Mandala' is in the hands of the millions of girls who have made American Idol a hit. Them and a handful of phone-redialer geeks who have been clocking up to 10,000 calls each week for their contestant of choice (but who, according to Fox, are in absolutely no way skewing the outcome)."

---

Question: Who called American Idol a conniving multimedia monster?
Answer: Karla Peterson.