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

The Han dynasty was an age of economic prosperity and saw a significant growth of the money economy first established during the Zhou dynasty (c. 1050–256 BC). The coinage issued by the central government mint in 119 BC remained the standard coinage of China until the Tang dynasty (618–907 AD). The period saw a number of limited institutional innovations. To pay for its military campaigns and the settlement of newly conquered frontier territories, the government nationalized the private salt and iron industries in 117 BC, but these government monopolies were repealed during the Eastern Han period. Science and technology during the Han period saw significant advances, including papermaking, the nautical steering rudder, the use of negative numbers in mathematics, the raised-relief map, the hydraulic-powered armillary sphere for astronomy, and a seismometer employing an inverted pendulum.

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Question: A seismometer during the Han dynasty used what type of pendulum?
Answer: inverted.
Context: 

In domestic dogs, sexual maturity begins to happen around age six to twelve months for both males and females, although this can be delayed until up to two years old for some large breeds. This is the time at which female dogs will have their first estrous cycle. They will experience subsequent estrous cycles biannually, during which the body prepares for pregnancy. At the peak of the cycle, females will come into estrus, being mentally and physically receptive to copulation. Because the ova survive and are capable of being fertilized for a week after ovulation, it is possible for a female to mate with more than one male.

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Question: Some larger breeds could take how long to become sexually mature?
Answer: two years.
Context: 

During the second half of the 19th century Dutch was banned from all levels of education by both Prussia and France and lost most of its functions as a cultural language. In both Germany and France the Dutch standard language is largely absent and speakers of these Dutch dialects will use German or French in everyday speech. Dutch is not afforded legal status in France or Germany, either by the central or regional public authorities and knowledge of the language is declining among younger generations.

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Question: In what country other than France did Dutch lose most of it usage in the 19th century?
Answer: Prussia.
Context: 

In July 2002, Beyoncé continued her acting career playing Foxxy Cleopatra alongside Mike Myers in the comedy film, Austin Powers in Goldmember, which spent its first weekend atop the US box office and grossed $73 million. Beyoncé released "Work It Out" as the lead single from its soundtrack album which entered the top ten in the UK, Norway, and Belgium. In 2003, Beyoncé starred opposite Cuba Gooding, Jr., in the musical comedy The Fighting Temptations as Lilly, a single mother whom Gooding's character falls in love with. The film received mixed reviews from critics but grossed $30 million in the U.S. Beyoncé released "Fighting Temptation" as the lead single from the film's soundtrack album, with Missy Elliott, MC Lyte, and Free which was also used to promote the film. Another of Beyoncé's contributions to the soundtrack, "Summertime", fared better on the US charts.

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Question: What genre of movie did Beyonce star in with Cuba Gooding, Jr?
Answer: musical comedy.
Context: 

The West Campus is located about one mile (1.6 km) to the west of the Danforth Campus in Clayton, Missouri, and primarily consists of a four-story former department store building housing mostly administrative space. The West Campus building was home to the Clayton branch of the Famous-Barr department store until 1990, when the University acquired the property and adjacent parking and began a series of renovations. Today, the basement level houses the West Campus Library, the University Archives, the Modern Graphic History Library, and conference space. The ground level still remains a retail space. The upper floors house consolidated capital gifts, portions of alumni and development, and information systems offices from across the Danforth and Medical School campuses. There is also a music rehearsal room on the second floor. The West Campus is also home to the Center for the Application of Information Technologies (CAIT), which provides IT training services.

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Question: When did the university acquire the property for the West Campus?
Answer: 1990.
Context: 

For temperature studies, subjects must remain awake but calm and semi-reclined in near darkness while their rectal temperatures are taken continuously. Though variation is great among normal chronotypes, the average human adult's temperature reaches its minimum at about 05:00 (5 a.m.), about two hours before habitual wake time. Baehr et al. found that, in young adults, the daily body temperature minimum occurred at about 04:00 (4 a.m.) for morning types but at about 06:00 (6 a.m.) for evening types. This minimum occurred at approximately the middle of the eight hour sleep period for morning types, but closer to waking in evening types.

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Question: What physical factor must be continuously monitored during temperature studies> 
Answer: temperatures.
Context: 

The SI unit of pressure is the pascal (symbol Pa), but vacuum is often measured in torrs, named for Torricelli, an early Italian physicist (1608–1647). A torr is equal to the displacement of a millimeter of mercury (mmHg) in a manometer with 1 torr equaling 133.3223684 pascals above absolute zero pressure. Vacuum is often also measured on the barometric scale or as a percentage of atmospheric pressure in bars or atmospheres. Low vacuum is often measured in millimeters of mercury (mmHg) or pascals (Pa) below standard atmospheric pressure. "Below atmospheric" means that the absolute pressure is equal to the current atmospheric pressure.

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Question: Absolute pressure  being equal to current atmospheric pressure means what?
Answer: "Below atmospheric".
Context: 

In the early part of the 20th century, Atlantic City went through a radical building boom. Many of the modest boarding houses that dotted the boardwalk were replaced with large hotels. Two of the city's most distinctive hotels were the Marlborough-Blenheim Hotel and the Traymore Hotel.

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Question: Where were the modest boarding houses located before they were replaced by large hotels?
Answer: the boardwalk.
Context: 

After setting up his workshop, Bell continued experiments based on Helmholtz's work with electricity and sound. He also modified a melodeon (a type of pump organ) so that it could transmit its music electrically over a distance. Once the family was settled in, both Bell and his father made plans to establish a teaching practice and in 1871, he accompanied his father to Montreal, where Melville was offered a position to teach his System of Visible Speech.

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Question: Who went with Bell to Montreal?
Answer: father.
Context: 

The most prominent struggle for power was the conflict that erupted after the death of Yaroslav the Wise. The rivaling Principality of Polotsk was contesting the power of the Grand Prince by occupying Novgorod, while Rostislav Vladimirovich was fighting for the Black Sea port of Tmutarakan belonging to Chernihiv.[citation needed] Three of Yaroslav's sons that first allied together found themselves fighting each other especially after their defeat to the Cuman forces in 1068 at the Battle of the Alta River. At the same time an uprising took place in Kiev, bringing to power Vseslav of Polotsk who supported the traditional Slavic paganism.[citation needed] The ruling Grand Prince Iziaslav fled to Poland asking for support and in couple of years returned to establish the order.[citation needed] The affairs became even more complicated by the end of the 11th century driving the state into chaos and constant warfare. On the initiative of Vladimir II Monomakh in 1097 the first federal council of Kievan Rus took place near Chernihiv]in the city of Liubech with the main intention to find an understanding among the fighting sides. However even though that did not really stop the fighting, it certainly cooled things off.[citation needed]

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Question: Where did the first federal council of Rus take place in 1097?
Answer: city of Liubech.
Context: 

At the time of the Berlin Conference, Africa contained one-fifth of the world’s population living in one-quarter of the world’s land area. However, from Europe's perspective, they were dividing an unknown continent. European countries established a few coastal colonies in Africa by the mid-nineteenth century, which included Cape Colony (Great Britain), Angola (Portugal), and Algeria (France), but until the late nineteenth century Europe largely traded with free African states without feeling the need for territorial possession. Until the 1880s most of Africa remained unchartered, with western maps from the period generally showing blank spaces for the continent’s interior.

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Question: How did maps show Africa Before 1880?
Answer: generally showing blank spaces for the continent’s interior..
Context: 

In 1906, precipitation hardening alloys were discovered by Alfred Wilm. Precipitation hardening alloys, such as certain alloys of aluminium, titanium, and copper, are heat-treatable alloys that soften when quenched (cooled quickly), and then harden over time. After quenching a ternary alloy of aluminium, copper, and magnesium, Wilm discovered that the alloy increased in hardness when left to age at room temperature. Although an explanation for the phenomenon was not provided until 1919, duralumin was one of the first "age hardening" alloys to be used, and was soon followed by many others. Because they often exhibit a combination of high strength and low weight, these alloys became widely used in many forms of industry, including the construction of modern aircraft.

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Question: What was used in the construction of modern aircraft?
Answer: duralumin.
Context: 

In addition, Federal Records Centers exist in each region that house materials owned by Federal agencies. Federal Records Centers are not open for public research. For example, the FRC in Lenexa, Kansas holds items from the treatment of John F. Kennedy after his fatal shooting in 1963.

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Question: When was JFK shot?
Answer: 1963.
Context: 

Adjacent to the palace is the Royal Mews, also designed by Nash, where the royal carriages, including the Gold State Coach, are housed. This rococo gilt coach, designed by Sir William Chambers in 1760, has painted panels by G. B. Cipriani. It was first used for the State Opening of Parliament by George III in 1762 and has been used by the monarch for every coronation since George IV. It was last used for the Golden Jubilee of Elizabeth II. Also housed in the mews are the coach horses used at royal ceremonial processions.

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Question: Who designed the Gold State Coach?
Answer: Sir William Chambers.
Context: 

In the 11th century, the Seljuk Turks took over much of the Middle East, occupying Persia during the 1040s, Armenia in the 1060s, and Jerusalem in 1070. In 1071, the Turkish army defeated the Byzantine army at the Battle of Manzikert and captured the Byzantine Emperor Romanus IV (r. 1068–71). The Turks were then free to invade Asia Minor, which dealt a dangerous blow to the Byzantine Empire by seizing a large part of its population and its economic heartland. Although the Byzantines regrouped and recovered somewhat, they never fully regained Asia Minor and were often on the defensive. The Turks also had difficulties, losing control of Jerusalem to the Fatimids of Egypt and suffering from a series of internal civil wars. The Byzantines also faced a revived Bulgaria, which in the late 12th and 13th centuries spread throughout the Balkans.

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Question: Who was taken prisoner at the Battle of Manzikert?
Answer: Byzantine Emperor Romanus IV.
Context: 

The city's planned design included specific areas for almost everything, including accommodation, Hotels Sectors North and South. New hotel facilities are being developed elsewhere, such as the hotels and tourism Sector North, located on the shores of Lake Paranoá. Brasília has a range of tourist accommodation from inns, pensions and hostels to larger international chain hotels. The city's restaurants cater to a wide range of foods from local and regional Brazilian dishes to international cuisine.

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Question: What kinds of restaurants does Brasilia have?
Answer: from local and regional Brazilian dishes to international cuisine.
Context: 

The Cold War saw periods of both heightened tension and relative calm. International crises arose, such as the Berlin Blockade (1948–1949), the Korean War (1950–1953), the Berlin Crisis of 1961, the Vietnam War (1959–1975), the Cuban Missile Crisis (1962), the Soviet war in Afghanistan (1979–1989) and NATO exercises in November 1983. There were also periods of reduced tension as both sides sought détente. Direct military attacks on adversaries were deterred by the potential for mutual assured destruction using deliverable nuclear weapons. In the Cold War era, the Generation of Love and the rise of computers changed society in very different, complex ways, including higher social and local mobility.

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Question: Through what time period did the Korean War last?
Answer: 1950–1953).
Context: 

The slave trade was engaged in by European state and non-state actors such as Great Britain, the Netherlands, Portugal and private companies, as well as various African states and non-state actors. With rising anti-slavery sentiment at home and changing economic realities, Great Britain outlawed the international slave trade in 1807. Following the Napoleonic Wars, Great Britain established the West Africa Squadron in an attempt to halt the international traffic in slaves. It stopped ships of other nations that were leaving the African coast with slaves; the seized slaves were taken to Freetown, a colony in West Africa originally established for the resettlement of freed slaves from Britain. Britain intervened in the Lagos Kingship power struggle by bombarding Lagos in 1851, deposing the slave trade friendly Oba Kosoko, helping to install the amenable Oba Akitoye, and signing the Treaty between Great Britain and Lagos on 1 January 1852. Britain annexed Lagos as a Crown Colony in August 1861 with the Lagos Treaty of Cession. British missionaries expanded their operations and travelled further inland. In 1864, Samuel Ajayi Crowther became the first African bishop of the Anglican Church.

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Question: Which Lagos king had supported the slave trade?
Answer: Oba Kosoko.
Context: 

In England, partly in response to a philosophy propounded by the Oxford Movement and others associated with the emerging revival of 'high church' or Anglo-Catholic ideas during the second quarter of the 19th century, neo-Gothic began to become promoted by influential establishment figures as the preferred style for ecclesiastical, civic and institutional architecture. The appeal of this Gothic revival (which after 1837, in Britain, is sometimes termed Victorian Gothic), gradually widened to encompass "low church" as well as "high church" clients. This period of more universal appeal, spanning 1855–1885, is known in Britain as High Victorian Gothic.

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Question: In Britain after 1837, what was the Gothic revival known as?
Answer: Victorian Gothic.
Context: 

In the 1930s, the experimental station W3XE, owned by Philco, became the first television station in Philadelphia; it became NBC's first affiliate in 1939, and later became KYW-TV (CBS). WCAU-TV, WPVI-TV, WHYY-TV, WPHL-TV, and WTXF-TV had all been founded by the 1970s. In 1952, WFIL (now WPVI) premiered the television show Bandstand, which later became the nationally broadcast American Bandstand hosted by Dick Clark. Today, as in many large metropolitan areas, each of the commercial networks has an affiliate, and call letters have been replaced by corporate IDs: CBS3, 6ABC, NBC10, Fox29, Telefutura28, Telemundo62, Univision65, plus My PHL 17 and CW Philly 57. The region is served also by public broadcasting stations WYBE-TV (Philadelphia), WHYY-TV (Wilmington, Delaware and Philadelphia), WLVT-TV (Lehigh Valley), and NJTV (New Jersey). In September 2007, Philadelphia approved a Public-access television cable TV channel.

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Question: Who owned W3XE?
Answer: Philco.
Context: 

Scholars now believe that the Arian Party was not monolithic, but held drastically different theological views that spanned the early Christian theological spectrum. They supported the tenets of Origenist thought and theology, but had little else in common. Moreover, many labelled "Arian" did not consider themselves followers of Arius. In addition, non-Homoousian bishops disagreed with being labeled as followers of Arius, since Arius was merely a presbyter, while they were fully ordained bishops. However, others point to the Council of Nicaea as proof in and of itself that Arianism was a real theological ideology.[citation needed]

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Question: What did the Council of Nicaea decide about Arianism?
Answer: a real theological ideology.
Context: 

The United States Congress declared war on Mexico on May 13, 1846 after only having a few hours to debate. Although President José Mariano Paredes's issuance of a manifesto on May 23 is sometimes considered the declaration of war, Mexico officially declared war by Congress on July 7. After the American invasion of New Mexico, Chihuahua sent 12,000 men led by Colonel Vidal to the border to stop the American military advance into the state. The Mexican forces being impatient to confront the American forces passed beyond El Paso del Norte about 20 miles (32 km) north along the Rio Grande. The first battle that Chihuahua fought was the battle of El Bracito; the Mexican forces consisting of 500 cavalry and 70 infantry confronted a force of 1,100–1,200 Americans on December 25, 1846. The battle ended badly by the Mexican forces that were then forced to retreat back into the state of Chihuahua. By December 27, 1846, the American forces occupied El Paso Del Norte. General Doniphan maintained camp in El Paso Del Norte awaiting supplies and artillery which he received in February 1847.

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Question: Which general maintained camp in El Paso Del Norte after the battle?
Answer: General Doniphan.
Context: 

Lilius's proposals had two components. Firstly, he proposed a correction to the length of the year. The mean tropical year is 365.24219 days long. As the average length of a Julian year is 365.25 days, the Julian year is almost 11 minutes longer than the mean tropical year. The discrepancy results in a drift of about three days every 400 years. Lilius's proposal resulted in an average year of 365.2425 days (see Accuracy). At the time of Gregory's reform there had already been a drift of 10 days since the Council of Nicaea, resulting in the vernal equinox falling on 10 or 11 March instead of the ecclesiastically fixed date of 21 March, and if unreformed it would drift further. Lilius proposed that the 10-day drift should be corrected by deleting the Julian leap day on each of its ten occurrences over a period of forty years, thereby providing for a gradual return of the equinox to 21 March.

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Question: On what date was the original vernal equinox set?
Answer: 21 March.
Context: 

In the aftermath of the 1986 U.S. attack, the army was purged of perceived disloyal elements, and in 1988, Gaddafi announced the creation of a popular militia to replace the army and police. In 1987, Libya began production of mustard gas at a facility in Rabta, although publicly denying it was stockpiling chemical weapons, and unsuccessfully attempted to develop nuclear weapons. The period also saw a growth in domestic Islamist opposition, formulated into groups like the Muslim Brotherhood and the Libyan Islamic Fighting Group. A number of assassination attempts against Gaddafi were foiled, and in turn, 1989 saw the security forces raid mosques believed to be centres of counter-revolutionary preaching. In October 1993, elements of the increasingly marginalised army initiated a failed coup in Misrata, while in September 1995, Islamists launched an insurgency in Benghazi, and in July 1996 an anti-Gaddafist football riot broke out in Tripoli. The Revolutionary Committees experienced a resurgence to combat these Islamists.

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Question: Where did a Muslim insurgency take place in 1995?
Answer: Benghazi.
Context: 

The city shares a 15-mile (24 km) border with Mexico that includes two border crossings. San Diego hosts the busiest international border crossing in the world, in the San Ysidro neighborhood at the San Ysidro Port of Entry. A second, primarily commercial border crossing operates in the Otay Mesa area; it is the largest commercial crossing on the California-Baja California border and handles the third-highest volume of trucks and dollar value of trade among all United States-Mexico land crossings.

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Question: How long is the border that San Diego shares with Mexico?
Answer: 15-mile (24 km).
Context: 

On Saturday, 24 June 1950, U.S. Secretary of State Dean Acheson informed President Truman that the North Koreans had invaded South Korea. Truman and Acheson discussed a U.S. invasion response and agreed that the United States was obligated to act, paralleling the North Korean invasion with Adolf Hitler's aggressions in the 1930s, with the conclusion being that the mistake of appeasement must not be repeated. Several U.S. industries were mobilized to supply materials, labor, capital, production facilities, and other services necessary to support the military objectives of the Korean War. However, President Truman later acknowledged that he believed fighting the invasion was essential to the American goal of the global containment of communism as outlined in the National Security Council Report 68 (NSC-68) (declassified in 1975):

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Question: The US involvement in the Korean War was important to achieving what goal?
Answer: the global containment of communism.
Context: 

In December 2011, the system went into operation on a trial basis. It has started providing navigation, positioning and timing data to China and the neighbouring area for free from 27 December. During this trial run, Compass will offer positioning accuracy to within 25 meters, but the precision will improve as more satellites are launched. Upon the system's official launch, it pledged to offer general users positioning information accurate to the nearest 10 m, measure speeds within 0.2 m per second, and provide signals for clock synchronisation accurate to 0.02 microseconds.

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Question: Upon launching, the Compass system, what was the location accuracy promised to users?
Answer: accurate to the nearest 10 m.
Context: 

Red is the traditional color of warning and danger. In the Middle Ages, a red flag announced that the defenders of a town or castle would fight to defend it, and a red flag hoisted by a warship meant they would show no mercy to their enemy. In Britain, in the early days of motoring, motor cars had to follow a man with a red flag who would warn horse-drawn vehicles, before the Locomotives on Highways Act 1896 abolished this law. In automobile races, the red flag is raised if there is danger to the drivers. In international football, a player who has made a serious violation of the rules is shown a red penalty card and ejected from the game.

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Question: Under what circimstance is a red flag flown in auto racing?
Answer: if there is danger to the drivers.