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572818dfff5b5019007d9d2b | Culture | Raimon Panikkar pointed out 29 ways in which cultural change can be brought about. Some of these are: growth, development, evolution, involution, renovation, reconception, reform, innovation, revivalism, revolution, mutation, progress, diffusion, osmosis, borrowing, eclecticism, syncretism, modernization, indigenization, and transformation. Hence Modernization could be similar or related to the enlightenment but a 'looser' term set to ideal and values that flourish. a belief in objectivity progress. Also seen as a belief in a secular society (free from religious influences) example objective and rational, science vs religion and finally been modern means not being religious. | What is the term used to describe what Modernization could be similar or related to? | {
"answer_start": [
398
],
"text": [
"enlightenment"
]
} |
5727b808ff5b5019007d935a | Rule_of_law | The rule of law is the legal principle that law should govern a nation, as opposed to being governed by arbitrary decisions of individual government officials. It primarily refers to the influence and authority of law within society, particularly as a constraint upon behaviour, including behaviour of government officials. The phrase can be traced back to 16th century Britain, and in the following century the Scottish theologian Samuel Rutherford used the phrase in his argument against the divine right of kings. The rule of law was further popularized in the 19th century by British jurist A. V. Dicey. The concept, if not the phrase, was familiar to ancient philosophers such as Aristotle, who wrote "Law should govern". | What phrase Ariostle also use which is closely related to "the rule of law"? | {
"answer_start": [
707
],
"text": [
"Law should govern"
]
} |
5727bbc63acd2414000deae1 | Rule_of_law | In the West, the ancient Greeks initially regarded the best form of government as rule by the best men. Plato advocated a benevolent monarchy ruled by an idealized philosopher king, who was above the law. Plato nevertheless hoped that the best men would be good at respecting established laws, explaining that "Where the law is subject to some other authority and has none of its own, the collapse of the state, in my view, is not far off; but if law is the master of the government and the government is its slave, then the situation is full of promise and men enjoy all the blessings that the gods shower on a state." More than Plato attempted to do, Aristotle flatly opposed letting the highest officials wield power beyond guarding and serving the laws. In other words, Aristotle advocated the rule of law: | To what did Plato compare a government that follows laws? | {
"answer_start": [
509
],
"text": [
"slave"
]
} |
5727c05f3acd2414000deb83 | Rule_of_law | In 1607, English Chief Justice Sir Edward Coke said in the Case of Prohibitions (according to his own report) "that the law was the golden met-wand and measure to try the causes of the subjects; and which protected His Majesty in safety and peace: with which the King was greatly offended, and said, that then he should be under the law, which was treason to affirm, as he said; to which I said, that Bracton saith, quod Rex non debed esse sub homine, sed sub Deo et lege (That the King ought not to be under any man but under God and the law.)." | To what did English Chief Justice Sir Edward Coke compare the law? | {
"answer_start": [
132
],
"text": [
"golden met-wand"
]
} |
572844e12ca10214002da208 | Gamal_Abdel_Nasser | In 1963, Egyptian director Youssef Chahine produced the film El Nasser Salah El Dine ("Saladin The Victorious"), which intentionally drew parallels between Saladin, considered a hero in the Arab world, and Nasser and his pan-Arabist policies. Nasser is played by Ahmed Zaki in Mohamed Fadel's 1996 Nasser 56. The film set the Egyptian box office record at the time, and focused on Nasser during the Suez Crisis. It is also considered a milestone in Egyptian and Arab cinema as the first film to dramatize the role of a modern-day Arab leader. Together with the 1999 Syrian biopic Gamal Abdel Nasser, the films marked the first biographical movies about contemporary public figures produced in the Arab world. | What 1963 film compared Nasser to Saladin? | {
"answer_start": [
61
],
"text": [
"El Nasser Salah El Dine"
]
} |
572844e12ca10214002da209 | Gamal_Abdel_Nasser | In 1963, Egyptian director Youssef Chahine produced the film El Nasser Salah El Dine ("Saladin The Victorious"), which intentionally drew parallels between Saladin, considered a hero in the Arab world, and Nasser and his pan-Arabist policies. Nasser is played by Ahmed Zaki in Mohamed Fadel's 1996 Nasser 56. The film set the Egyptian box office record at the time, and focused on Nasser during the Suez Crisis. It is also considered a milestone in Egyptian and Arab cinema as the first film to dramatize the role of a modern-day Arab leader. Together with the 1999 Syrian biopic Gamal Abdel Nasser, the films marked the first biographical movies about contemporary public figures produced in the Arab world. | What 1996 Nasser-related film set a box office record? | {
"answer_start": [
298
],
"text": [
"Nasser 56"
]
} |
57280b472ca10214002d9c70 | Time | Time has historically been closely related with space, the two together merging into spacetime in Einstein's special relativity and general relativity. According to these theories, the concept of time depends on the spatial reference frame of the observer, and the human perception as well as the measurement by instruments such as clocks are different for observers in relative motion. For example, if a spaceship carrying a clock flies through space at (very nearly) the speed of light, its crew does not notice a change in the speed of time on board their vessel because everything traveling at the same speed slows down at the same rate (including the clock, the crew's thought processes, and the functions of their bodies). However, to a stationary observer watching the spaceship fly by, the spaceship appears flattened in the direction it is traveling and the clock on board the spaceship appears to move very slowly. | Historically, time has been closely related with what? | {
"answer_start": [
48
],
"text": [
"space"
]
} |
572814644b864d19001643fd | Time | 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 20–30 minutes one-way for a large number of cities over a long period. | What is a developing field of time related study? | {
"answer_start": [
103
],
"text": [
"Time-use research"
]
} |
57281a5fff5b5019007d9d4c | St._John%27s,_Newfoundland_and_Labrador | Often compared to San Francisco due to the hilly terrain and steep maze of residential streets, housing in St. John's is typically painted in bright colours. The city council has implemented strict heritage regulations in the downtown area, including restrictions on the height of buildings. These regulations have caused much controversy over the years. With the city experiencing an economic boom a lack of hotel rooms and office space has seen proposals put forward that do not meet the current height regulations. Heritage advocates argue that the current regulations should be enforced while others believe the regulations should be relaxed to encourage economic development. | What US city is St. John's often compared to? | {
"answer_start": [
18
],
"text": [
"San Francisco"
]
} |
57281e1d4b864d19001644ce | PlayStation_3 | At its press conference at the 2007 Tokyo Game Show, Sony announced DualShock 3 (trademarked DUALSHOCK 3), a PlayStation 3 controller with the same function and design as Sixaxis, but with vibration capability included. Hands-on accounts describe the controller as being noticeably heavier than the standard Sixaxis controller and capable of vibration forces comparable to DualShock 2. It was released in Japan on November 11, 2007; in North America on April 5, 2008; in Australia on April 24, 2008; in New Zealand on May 9, 2008; in mainland Europe on July 2, 2008, and in the United Kingdom and Ireland on July 4, 2008. | What did many people who handled the DualShock 3 say it was compared to the Sixaxis? | {
"answer_start": [
282
],
"text": [
"heavier"
]
} |
572828ed2ca10214002d9f8b | PlayStation_3 | Sony confirmed that there was an error and stated that they were narrowing down the issue and were continuing to work to restore service. By March 2 (UTC), 2010, owners of original PS3 models could connect to PSN successfully and the clock no longer showed December 31, 1999. Sony stated that the affected models incorrectly identified 2010 as a leap year, because of a bug in the BCD method of storing the date. However, for some users, the hardware's operating system clock (mainly updated from the internet and not associated with the internal clock) needed to be updated manually or by re-syncing it via the internet. | What clock unrelated to the error in the PS3 had to be updated in some cases in order to fix the bug? | {
"answer_start": [
453
],
"text": [
"operating system clock"
]
} |
57284a61ff5b5019007da111 | PlayStation_3 | CNET awarded PS3 Slim four out of five stars praising its Blu-ray capabilities, 120 GB hard drive, free online gaming service and more affordable pricing point, but complained about the lack of backward compatibility for PlayStation 2 games. TechRadar gave PS3 Slim four and a half stars out of five praising its new smaller size and summed up its review stating "Over all, the PS3 Slim is a phenomenal piece of kit. It's amazing that something so small can do so much". However, they criticized the exterior design and the build quality in relation to the original model. | What area of the console did TechRadar feel was designed poorly compared to the original PS3? | {
"answer_start": [
500
],
"text": [
"exterior"
]
} |
572812cd2ca10214002d9d4a | Group_(mathematics) | To understand groups beyond the level of mere symbolic manipulations as above, more structural concepts have to be employed.c[›] There is a conceptual principle underlying all of the following notions: to take advantage of the structure offered by groups (which sets, being "structureless", do not have), constructions related to groups have to be compatible with the group operation. This compatibility manifests itself in the following notions in various ways. For example, groups can be related to each other via functions called group homomorphisms. By the mentioned principle, they are required to respect the group structures in a precise sense. The structure of groups can also be understood by breaking them into pieces called subgroups and quotient groups. The principle of "preserving structures"—a recurring topic in mathematics throughout—is an instance of working in a category, in this case the category of groups. | What concept describes groups that can be related to each other via functions? | {
"answer_start": [
533
],
"text": [
"group homomorphisms"
]
} |
572827c73acd2414000df5b5 | Group_(mathematics) | For any prime number p, there is also the multiplicative group of integers modulo p. Its elements are the integers 1 to p − 1. The group operation is multiplication modulo p. That is, the usual product is divided by p and the remainder of this division is the result of modular multiplication. For example, if p = 5, there are four group elements 1, 2, 3, 4. In this group, 4 · 4 = 1, because the usual product 16 is equivalent to 1, which divided by 5 yields a remainder of 1. for 5 divides 16 − 1 = 15, denoted | What term describes the group of integers related to a prime number? | {
"answer_start": [
75
],
"text": [
"modulo p"
]
} |
57283e51ff5b5019007d9fdb | Group_(mathematics) | Lie groups are of fundamental importance in modern physics: Noether's theorem links continuous symmetries to conserved quantities. Rotation, as well as translations in space and time are basic symmetries of the laws of mechanics. They can, for instance, be used to construct simple models—imposing, say, axial symmetry on a situation will typically lead to significant simplification in the equations one needs to solve to provide a physical description.v[›] Another example are the Lorentz transformations, which relate measurements of time and velocity of two observers in motion relative to each other. They can be deduced in a purely group-theoretical way, by expressing the transformations as a rotational symmetry of Minkowski space. The latter serves—in the absence of significant gravitation—as a model of space time in special relativity. The full symmetry group of Minkowski space, i.e. including translations, is known as the Poincaré group. By the above, it plays a pivotal role in special relativity and, by implication, for quantum field theories. Symmetries that vary with location are central to the modern description of physical interactions with the help of gauge theory. | What concept relates measurements of time and velocity of two observers in motion relative to each other? | {
"answer_start": [
483
],
"text": [
"Lorentz transformations"
]
} |
572820623acd2414000df50e | Central_African_Republic | The per capita income of the Republic is often listed as being approximately $400 a year, one of the lowest in the world, but this figure is based mostly on reported sales of exports and largely ignores the unregistered sale of foods, locally produced alcoholic beverages, diamonds, ivory, bushmeat, and traditional medicine. For most Central Africans, the informal economy of the CAR is more important than the formal economy.[citation needed] Export trade is hindered by poor economic development and the country's landlocked position.[citation needed] | How is the per capita income compared to the world? | {
"answer_start": [
90
],
"text": [
"one of the lowest"
]
} |
57281206ff5b5019007d9c65 | Asthma | Family history is a risk factor for asthma, with many different genes being implicated. If one identical twin is affected, the probability of the other having the disease is approximately 25%. By the end of 2005, 25 genes had been associated with asthma in six or more separate populations, including GSTM1, IL10, CTLA-4, SPINK5, LTC4S, IL4R and ADAM33, among others. Many of these genes are related to the immune system or modulating inflammation. Even among this list of genes supported by highly replicated studies, results have not been consistent among all populations tested. In 2006 over 100 genes were associated with asthma in one genetic association study alone; more continue to be found. | What else are these genes closely related to? | {
"answer_start": [
403
],
"text": [
"the immune system or modulating inflammation"
]
} |
5728ad4eff5b5019007da462 | Asthma | Spirometry is recommended to aid in diagnosis and management. It is the single best test for asthma. If the FEV1 measured by this technique improves more than 12% following administration of a bronchodilator such as salbutamol, this is supportive of the diagnosis. It however may be normal in those with a history of mild asthma, not currently acting up. As caffeine is a bronchodilator in people with asthma, the use of caffeine before a lung function test may interfere with the results. Single-breath diffusing capacity can help differentiate asthma from COPD. It is reasonable to perform spirometry every one or two years to follow how well a person's asthma is controlled. | What test can tell the difference between asthma and COPD? | {
"answer_start": [
490
],
"text": [
"Single-breath diffusing capacity"
]
} |
5728ccd02ca10214002da80d | Asthma | Asthma as a result of (or worsened by) workplace exposures, is a commonly reported occupational disease. Many cases however are not reported or recognized as such. It is estimated that 5–25% of asthma cases in adults are work–related. A few hundred different agents have been implicated with the most common being: isocyanates, grain and wood dust, colophony, soldering flux, latex, animals, and aldehydes. The employment associated with the highest risk of problems include: those who spray paint, bakers and those who process food, nurses, chemical workers, those who work with animals, welders, hairdressers and timber workers. | What percent of asthma cases in adults are work-related? | {
"answer_start": [
164
],
"text": [
"It is estimated that 5–25%"
]
} |
5728d7c4ff5b5019007da7f4 | Asthma | From 2000 to 2010, the average cost per asthma-related hospital stay in the United States for children remained relatively stable at about $3,600, whereas the average cost per asthma-related hospital stay for adults increased from $5,200 to $6,600. In 2010, Medicaid was the most frequent primary payer among children and adults aged 18–44 years in the United States; private insurance was the second most frequent payer. Among both children and adults in the lowest income communities in the United States there is a higher rates of hospital stays for asthma in 2010 than those in the highest income communities. | How much was the average cost of hospital stays for asthma-related issues for children?? | {
"answer_start": [
133
],
"text": [
"about $3,600"
]
} |
5728d7c4ff5b5019007da7f5 | Asthma | From 2000 to 2010, the average cost per asthma-related hospital stay in the United States for children remained relatively stable at about $3,600, whereas the average cost per asthma-related hospital stay for adults increased from $5,200 to $6,600. In 2010, Medicaid was the most frequent primary payer among children and adults aged 18–44 years in the United States; private insurance was the second most frequent payer. Among both children and adults in the lowest income communities in the United States there is a higher rates of hospital stays for asthma in 2010 than those in the highest income communities. | How much was the average cost of hospital stays for asthma-related issues for adults? | {
"answer_start": [
226
],
"text": [
"from $5,200 to $6,600"
]
} |
572826224b864d19001645a4 | LaserDisc | Sound could be stored in either analog or digital format and in a variety of surround sound formats; NTSC discs could carry two analog audio tracks, plus two uncompressed PCM digital audio tracks, which were (EFM, CIRC, 16-bit and 44.056 kHz sample rate). PAL discs could carry one pair of audio tracks, either analog or digital and the digital tracks on a PAL disc were 16-bit 44.1 kHz as on a CD; in the UK, the term "LaserVision" is used to refer to discs with analog sound, while "LaserDisc" is used for those with digital audio. The digital sound signal in both formats are EFM-encoded as in CD. Dolby Digital (also called AC-3) and DTS—which are now common on DVD titles—first became available on LaserDisc, and Star Wars: Episode I – The Phantom Menace (1999) which was released on LaserDisc in Japan, is among the first home video releases ever to include 6.1 channel Dolby Digital EX Surround. Unlike DVDs, which carry Dolby Digital audio in digital form, LaserDiscs store Dolby Digital in a frequency modulated form within a track normally used for analog audio. Extracting Dolby Digital from a LaserDisc required a player equipped with a special "AC-3 RF" output and an external demodulator in addition to an AC-3 decoder. The demodulator was necessary to convert the 2.88 MHz modulated AC-3 information on the disc into a 384 kbit/s signal that the decoder could handle. DTS audio, when available on a disc, replaced the digital audio tracks; hearing DTS sound required only an S/PDIF compliant digital connection to a DTS decoder. | What was the difference between LaserDisc and LaserVision in the UK? | {
"answer_start": [
419
],
"text": [
"\"LaserVision\" is used to refer to discs with analog sound, while \"LaserDisc\" is used for those with digital audio"
]
} |
5728a13eff5b5019007da34e | LaserDisc | The only cosmetic difference between an RLV disc and a regular factory-pressed LaserDiscs is their reflective purple-violet (or blue with some RLV discs) color resulting from the dye embedded in the reflective layer of the disc to make it recordable, as opposed to the silver mirror appearance of regular LDs. The purplish color of RLVs is very similar to DVD-R and DVD+R discs. RLVs were popular for making short-run quantities of LaserDiscs for specialized applications such as interactive kiosks and flight simulators. | What is the difference in appearance between an RLV disc and a regular LD? | {
"answer_start": [
99
],
"text": [
"reflective purple-violet (or blue with some RLV discs) color"
]
} |
572834aeff5b5019007d9f08 | Annelid | In 2007 Torsten Struck and colleagues compared 3 genes in 81 taxa, of which 9 were outgroups, in other words not considered closely related to annelids but included to give an indication of where the organisms under study are placed on the larger tree of life. For a cross-check the study used an analysis of 11 genes (including the original 3) in 10 taxa. This analysis agreed that clitellates, pogonophorans and echiurans were on various branches of the polychaete family tree. It also concluded that the classification of polychaetes into Scolecida, Canalipalpata and Aciculata was useless, as the members of these alleged groups were scattered all over the family tree derived from comparing the 81 taxa. In addition, it also placed sipunculans, generally regarded at the time as a separate phylum, on another branch of the polychaete tree, and concluded that leeches were a sub-group of oligochaetes rather than their sister-group among the clitellates. Rouse accepted the analyses based on molecular phylogenetics, and their main conclusions are now the scientific consensus, although the details of the annelid family tree remain uncertain. | Who compared annelid genes in 2007? | {
"answer_start": [
8
],
"text": [
"Torsten Struck and colleagues"
]
} |
572834aeff5b5019007d9f09 | Annelid | In 2007 Torsten Struck and colleagues compared 3 genes in 81 taxa, of which 9 were outgroups, in other words not considered closely related to annelids but included to give an indication of where the organisms under study are placed on the larger tree of life. For a cross-check the study used an analysis of 11 genes (including the original 3) in 10 taxa. This analysis agreed that clitellates, pogonophorans and echiurans were on various branches of the polychaete family tree. It also concluded that the classification of polychaetes into Scolecida, Canalipalpata and Aciculata was useless, as the members of these alleged groups were scattered all over the family tree derived from comparing the 81 taxa. In addition, it also placed sipunculans, generally regarded at the time as a separate phylum, on another branch of the polychaete tree, and concluded that leeches were a sub-group of oligochaetes rather than their sister-group among the clitellates. Rouse accepted the analyses based on molecular phylogenetics, and their main conclusions are now the scientific consensus, although the details of the annelid family tree remain uncertain. | How many annelid genes did Torsten Struck first compare? | {
"answer_start": [
47
],
"text": [
"3"
]
} |
572834aeff5b5019007d9f0a | Annelid | In 2007 Torsten Struck and colleagues compared 3 genes in 81 taxa, of which 9 were outgroups, in other words not considered closely related to annelids but included to give an indication of where the organisms under study are placed on the larger tree of life. For a cross-check the study used an analysis of 11 genes (including the original 3) in 10 taxa. This analysis agreed that clitellates, pogonophorans and echiurans were on various branches of the polychaete family tree. It also concluded that the classification of polychaetes into Scolecida, Canalipalpata and Aciculata was useless, as the members of these alleged groups were scattered all over the family tree derived from comparing the 81 taxa. In addition, it also placed sipunculans, generally regarded at the time as a separate phylum, on another branch of the polychaete tree, and concluded that leeches were a sub-group of oligochaetes rather than their sister-group among the clitellates. Rouse accepted the analyses based on molecular phylogenetics, and their main conclusions are now the scientific consensus, although the details of the annelid family tree remain uncertain. | How many annelid genes did Torsten Struck compare for a cross-check? | {
"answer_start": [
309
],
"text": [
"11"
]
} |
57285a642ca10214002da2b6 | God | Another view, advanced by Richard Dawkins, is that the existence of God is an empirical question, on the grounds that "a universe with a god would be a completely different kind of universe from one without, and it would be a scientific difference." Carl Sagan argued that the doctrine of a Creator of the Universe was difficult to prove or disprove and that the only conceivable scientific discovery that could disprove the existence of a Creator would be the discovery that the universe is infinitely old. | What kind of difference does Dawkins believe would come from the existence of God? | {
"answer_start": [
224
],
"text": [
"a scientific difference"
]
} |
57284ce5ff5b5019007da130 | War_on_Terror | In addition to military efforts abroad, in the aftermath of 9/11 the Bush Administration increased domestic efforts to prevent future attacks. Various government bureaucracies that handled security and military functions were reorganized. A new cabinet-level agency called the United States Department of Homeland Security was created in November 2002 to lead and coordinate the largest reorganization of the U.S. federal government since the consolidation of the armed forces into the Department of Defense.[citation needed] | What other massive agency's creation was the DHS compared to? | {
"answer_start": [
482
],
"text": [
"the Department of Defense"
]
} |
57284e682ca10214002da274 | War_on_Terror | In 2005, the UN Security Council adopted Resolution 1624 concerning incitement to commit acts of terrorism and the obligations of countries to comply with international human rights laws. Although both resolutions require mandatory annual reports on counter-terrorism activities by adopting nations, the United States and Israel have both declined to submit reports. In the same year, the United States Department of Defense and the Chairman of the Joint Chiefs of Staff issued a planning document, by the name "National Military Strategic Plan for the War on Terrorism", which stated that it constituted the "comprehensive military plan to prosecute the Global War on Terror for the Armed Forces of the United States...including the findings and recommendations of the 9/11 Commission and a rigorous examination with the Department of Defense". | What terrorism-related resolution did the UN Security Council adopt in 2005? | {
"answer_start": [
41
],
"text": [
"Resolution 1624"
]
} |
57284ec24b864d1900164920 | War_on_Terror | Criticism of the War on Terror addresses the issues, morality, efficiency, economics, and other questions surrounding the War on Terror and made against the phrase itself, calling it a misnomer. The notion of a "war" against "terrorism" has proven highly contentious, with critics charging that it has been exploited by participating governments to pursue long-standing policy/military objectives, reduce civil liberties, and infringe upon human rights. It is argued that the term war is not appropriate in this context (as in War on Drugs), since there is no identifiable enemy, and that it is unlikely international terrorism can be brought to an end by military means. | Which other misnamed 'war' has 'war on terror' been compared to? | {
"answer_start": [
527
],
"text": [
"War on Drugs"
]
} |
572847faff5b5019007da0c7 | Serbo-Croatian | South Slavic dialects historically formed a continuum. The turbulent history of the area, particularly due to expansion of the Ottoman Empire, resulted in a patchwork of dialectal and religious differences. Due to population migrations, Shtokavian became the most widespread in the western Balkans, intruding westwards into the area previously occupied by Chakavian and Kajkavian (which further blend into Slovenian in the northwest). Bosniaks, Croats and Serbs differ in religion and were historically often part of different cultural circles, although a large part of the nations have lived side by side under foreign overlords. During that period, the language was referred to under a variety of names, such as "Slavic", "Illyrian", or according to region, "Bosnian", "Serbian" and "Croatian", the latter often in combination with "Slavonian" or "Dalmatian". | What was one of the major differences between the Bosniaks, Croats and Serbs? | {
"answer_start": [
472
],
"text": [
"religion"
]
} |
572975a8af94a219006aa46e | Serbo-Croatian | South Slavic dialects historically formed a continuum. The turbulent history of the area, particularly due to expansion of the Ottoman Empire, resulted in a patchwork of dialectal and religious differences. Due to population migrations, Shtokavian became the most widespread in the western Balkans, intruding westwards into the area previously occupied by Chakavian and Kajkavian (which further blend into Slovenian in the northwest). Bosniaks, Croats and Serbs differ in religion and were historically often part of different cultural circles, although a large part of the nations have lived side by side under foreign overlords. During that period, the language was referred to under a variety of names, such as "Slavic", "Illyrian", or according to region, "Bosnian", "Serbian" and "Croatian", the latter often in combination with "Slavonian" or "Dalmatian". | What specific historical event caused a group of religious and verbal differences in South Slavic dialect? | {
"answer_start": [
110
],
"text": [
"expansion of the Ottoman Empire"
]
} |
5728591aff5b5019007da1a8 | Alaska | Alaska (i/əˈlæskə/) is a U.S. state situated in the northwest extremity of the Americas. The Canadian administrative divisions of British Columbia and Yukon border the state to the east while Russia has a maritime border with the state to the west across the Bering Strait. To the north are the Chukchi and Beaufort Seas, the southern parts of the Arctic Ocean. To the south and southwest is the Pacific Ocean. Alaska is the largest state in the United States by area, the 3rd least populous and the least densely populated of the 50 United States. Approximately half of Alaska's residents (the total estimated at 738,432 by the Census Bureau in 2015) live within the Anchorage metropolitan area. Alaska's economy is dominated by the fishing, natural gas, and oil industries, resources which it has in abundance. Military bases and tourism are also a significant part of the economy. | How does Alaska compare in size to other US states? | {
"answer_start": [
425
],
"text": [
"largest state in the United States by area"
]
} |
5728a8e0ff5b5019007da3c6 | Alaska | On March 27, 1964, the massive Good Friday earthquake killed 133 people and destroyed several villages and portions of large coastal communities, mainly by the resultant tsunamis and landslides. It was the second-most-powerful earthquake in the recorded history of the world, with a moment magnitude of 9.2. It was over one thousand times more powerful than the 1989 San Francisco earthquake. The time of day (5:36 pm), time of year and location of the epicenter were all cited as factors in potentially sparing thousands of lives, particularly in Anchorage. | How did the Good Friday earthquake compare to other documented earthquakes in the world? | {
"answer_start": [
206
],
"text": [
"second-most-powerful earthquake in the recorded history of the world"
]
} |
5728a8e0ff5b5019007da3c7 | Alaska | On March 27, 1964, the massive Good Friday earthquake killed 133 people and destroyed several villages and portions of large coastal communities, mainly by the resultant tsunamis and landslides. It was the second-most-powerful earthquake in the recorded history of the world, with a moment magnitude of 9.2. It was over one thousand times more powerful than the 1989 San Francisco earthquake. The time of day (5:36 pm), time of year and location of the epicenter were all cited as factors in potentially sparing thousands of lives, particularly in Anchorage. | How did the Good Friday earthquake compare to the 1989 San Francisco earthquake? | {
"answer_start": [
315
],
"text": [
"over one thousand times more powerful"
]
} |
5728aa0f2ca10214002da56c | Alaska | According to statistics collected by the Association of Religion Data Archives from 2010, about 34% of Alaska residents were members of religious congregations. 100,960 people identified as Evangelical Protestants, 50,866 as Roman Catholic, and 32,550 as mainline Protestants. Roughly 4% are Mormon, 0.5% are Jewish, 1% are Muslim, 0.5% are Buddhist, and 0.5% are Hindu. The largest religious denominations in Alaska as of 2010[update] were the Catholic Church with 50,866 adherents, non-denominational Evangelical Protestants with 38,070 adherents, The Church of Jesus Christ of Latter-day Saints with 32,170 adherents, and the Southern Baptist Convention with 19,891 adherents. Alaska has been identified, along with Pacific Northwest states Washington and Oregon, as being the least religious states of the USA, in terms of church membership. | How does Alaska compare with other states in church membership? | {
"answer_start": [
780
],
"text": [
"least religious states of the USA"
]
} |
5728a6062ca10214002da522 | Mandolin | Another family of bowlback mandolins came from Milan and Lombardy. These mandolins are closer to the mandolino or mandore than other modern mandolins. They are shorter and wider than the standard Neapolitan mandolin, with a shallow back. The instruments have 6 strings, 3 wire treble-strings and 3 gut or wire-wrapped-silk bass-strings. The strings ran between the tuning pegs and a bridge that was glued to the soundboard, as a guitar's. The Lombardic mandolins were tuned g b e' a' d" g". A developer of the Milanese stye was Antonio Monzino (Milan) and his family who made them for 6 generations. | What differences do the Lombardic mandolins have from the Neapolitan mandolin? | {
"answer_start": [
151
],
"text": [
"They are shorter and wider"
]
} |
5728c94a2ca10214002da7c8 | Race_(human_categorization) | There is a wide consensus that the racial categories that are common in everyday usage are socially constructed, and that racial groups cannot be biologically defined. Nonetheless, some scholars argue that racial categories obviously correlate with biological traits (e.g. phenotype) to some degree, and that certain genetic markers have varying frequencies among human populations, some of which correspond more or less to traditional racial groupings. For this reason, there is no current consensus about whether racial categories can be considered to have significance for understanding human genetic variation. | What do some people contend racial categories are obviously correlated with? | {
"answer_start": [
249
],
"text": [
"biological traits"
]
} |
5728d7ba3acd2414000e0001 | Race_(human_categorization) | Groups of humans have always identified themselves as distinct from neighboring groups, but such differences have not always been understood to be natural, immutable and global. These features are the distinguishing features of how the concept of race is used today. In this way the idea of race as we understand it today came about during the historical process of exploration and conquest which brought Europeans into contact with groups from different continents, and of the ideology of classification and typology found in the natural sciences. | What have human groups always considered themselves as compared to other nearby groups? | {
"answer_start": [
54
],
"text": [
"distinct"
]
} |
5728d7ba3acd2414000e0002 | Race_(human_categorization) | Groups of humans have always identified themselves as distinct from neighboring groups, but such differences have not always been understood to be natural, immutable and global. These features are the distinguishing features of how the concept of race is used today. In this way the idea of race as we understand it today came about during the historical process of exploration and conquest which brought Europeans into contact with groups from different continents, and of the ideology of classification and typology found in the natural sciences. | What have differences among groups not typically been perceived as being? | {
"answer_start": [
147
],
"text": [
"natural, immutable and global"
]
} |
5728d9162ca10214002da966 | Race_(human_categorization) | The European concept of "race", along with many of the ideas now associated with the term, arose at the time of the scientific revolution, which introduced and privileged the study of natural kinds, and the age of European imperialism and colonization which established political relations between Europeans and peoples with distinct cultural and political traditions. As Europeans encountered people from different parts of the world, they speculated about the physical, social, and cultural differences among various human groups. The rise of the Atlantic slave trade, which gradually displaced an earlier trade in slaves from throughout the world, created a further incentive to categorize human groups in order to justify the subordination of African slaves. Drawing on Classical sources and upon their own internal interactions — for example, the hostility between the English and Irish powerfully influenced early European thinking about the differences between people — Europeans began to sort themselves and others into groups based on physical appearance, and to attribute to individuals belonging to these groups behaviors and capacities which were claimed to be deeply ingrained. A set of folk beliefs took hold that linked inherited physical differences between groups to inherited intellectual, behavioral, and moral qualities. Similar ideas can be found in other cultures, for example in China, where a concept often translated as "race" was associated with supposed common descent from the Yellow Emperor, and used to stress the unity of ethnic groups in China. Brutal conflicts between ethnic groups have existed throughout history and across the world. | Who speculated about the observable difference among different groups of humans? | {
"answer_start": [
372
],
"text": [
"Europeans"
]
} |
5728d9f14b864d1900164f8d | Race_(human_categorization) | The first post-Classical published classification of humans into distinct races seems to be François Bernier's Nouvelle division de la terre par les différents espèces ou races qui l'habitent ("New division of Earth by the different species or races which inhabit it"), published in 1684. In the 18th century the differences among human groups became a focus of scientific investigation. But the scientific classification of phenotypic variation was frequently coupled with racist ideas about innate predispositions of different groups, always attributing the most desirable features to the White, European race and arranging the other races along a continuum of progressively undesirable attributes. The 1735 classification of Carl Linnaeus, inventor of zoological taxonomy, divided the human race Homo sapiens into continental varieties of europaeus, asiaticus, americanus, and afer, each associated with a different humour: sanguine, melancholic, choleric, and phlegmatic, respectively. Homo sapiens europaeus was described as active, acute, and adventurous, whereas Homo sapiens afer was said to be crafty, lazy, and careless. | In what century did differences among human groups become a focus of science? | {
"answer_start": [
296
],
"text": [
"18th century"
]
} |
5728dbc5ff5b5019007da842 | Race_(human_categorization) | From the 17th through 19th centuries, the merging of folk beliefs about group differences with scientific explanations of those differences produced what one scholar has called an "ideology of race". According to this ideology, races are primordial, natural, enduring and distinct. It was further argued that some groups may be the result of mixture between formerly distinct populations, but that careful study could distinguish the ancestral races that had combined to produce admixed groups. Subsequent influential classifications by Georges Buffon, Petrus Camper and Christoph Meiners all classified "Negros" as inferior to Europeans. In the United States the racial theories of Thomas Jefferson were influential. He saw Africans as inferior to Whites especially in regards to their intellect, and imbued with unnatural sexual appetites, but described Native Americans as equals to whites. | What did the merging of superstitious beliefs and scientific ones regarding group differences produce? | {
"answer_start": [
177
],
"text": [
"an \"ideology of race\""
]
} |
572903331d04691400778f69 | Race_(human_categorization) | In the last two decades of the 18th century, the theory of polygenism, the belief that different races had evolved separately in each continent and shared no common ancestor, was advocated in England by historian Edward Long and anatomist Charles White, in Germany by ethnographers Christoph Meiners and Georg Forster, and in France by Julien-Joseph Virey. In the US, Samuel George Morton, Josiah Nott and Louis Agassiz promoted this theory in the mid-nineteenth century. Polygenism was popular and most widespread in the 19th century, culminating in the founding of the Anthropological Society of London (1863) during the period of the American Civil War, in opposition to the Ethnological Society, which had abolitionist sympathies. | What theory is the belief that differences races had evolved independently on each continent? | {
"answer_start": [
59
],
"text": [
"polygenism"
]
} |
57290dc41d04691400778fda | Race_(human_categorization) | In a response to Livingstone, Theodore Dobzhansky argued that when talking about race one must be attentive to how the term is being used: "I agree with Dr. Livingstone that if races have to be 'discrete units,' then there are no races, and if 'race' is used as an 'explanation' of the human variability, rather than vice versa, then the explanation is invalid." He further argued that one could use the term race if one distinguished between "race differences" and "the race concept." The former refers to any distinction in gene frequencies between populations; the latter is "a matter of judgment." He further observed that even when there is clinal variation, "Race differences are objectively ascertainable biological phenomena… but it does not follow that racially distinct populations must be given racial (or subspecific) labels." In short, Livingstone and Dobzhansky agree that there are genetic differences among human beings; they also agree that the use of the race concept to classify people, and how the race concept is used, is a matter of social convention. They differ on whether the race concept remains a meaningful and useful social convention. | While race difference possible to easily see, they need not be given what? | {
"answer_start": [
830
],
"text": [
"labels"
]
} |
5729117aaf94a219006aa01d | Race_(human_categorization) | Another way to look at differences between populations is to measure genetic differences rather than physical differences between groups. The mid-20th-century anthropologist William C. Boyd defined race as: "A population which differs significantly from other populations in regard to the frequency of one or more of the genes it possesses. It is an arbitrary matter which, and how many, gene loci we choose to consider as a significant 'constellation'". Leonard Lieberman and Rodney Kirk have pointed out that "the paramount weakness of this statement is that if one gene can distinguish races then the number of races is as numerous as the number of human couples reproducing." Moreover, the anthropologist Stephen Molnar has suggested that the discordance of clines inevitably results in a multiplication of races that renders the concept itself useless. The Human Genome Project states "People who have lived in the same geographic region for many generations may have some alleles in common, but no allele will be found in all members of one population and in no members of any other." | What can one use to look at differences between groups instead of physical differences? | {
"answer_start": [
69
],
"text": [
"genetic differences"
]
} |
5729259daf94a219006aa0fd | Race_(human_categorization) | Craig Venter and Francis Collins of the National Institute of Health jointly made the announcement of the mapping of the human genome in 2000. Upon examining the data from the genome mapping, Venter realized that although the genetic variation within the human species is on the order of 1–3% (instead of the previously assumed 1%), the types of variations do not support notion of genetically defined races. Venter said, "Race is a social concept. It's not a scientific one. There are no bright lines (that would stand out), if we could compare all the sequenced genomes of everyone on the planet." "When we try to apply science to try to sort out these social differences, it all falls apart." | What happens when scientists try to apply science to sort out social differences? | {
"answer_start": [
675
],
"text": [
"it all falls apart"
]
} |
57292674af94a219006aa111 | Race_(human_categorization) | The theory that race is merely a social construct has been challenged by the findings of researchers at the Stanford University School of Medicine, published in the American Journal of Human Genetics as "Genetic Structure, Self-Identified Race/Ethnicity, and Confounding in Case-Control Association Studies". One of the researchers, Neil Risch, noted: "we looked at the correlation between genetic structure [based on microsatellite markers] versus self-description, we found 99.9% concordance between the two. We actually had a higher discordance rate between self-reported sex and markers on the X chromosome! So you could argue that sex is also a problematic category. And there are differences between sex and gender; self-identification may not be correlated with biology perfectly. And there is sexism." | What may self-identification not correlate with precisely? | {
"answer_start": [
769
],
"text": [
"biology"
]
} |
57292e273f37b319004780b5 | Race_(human_categorization) | Since the early history of the United States, Amerindians, African–Americans, and European Americans have been classified as belonging to different races. Efforts to track mixing between groups led to a proliferation of categories, such as mulatto and octoroon. The criteria for membership in these races diverged in the late 19th century. During Reconstruction, increasing numbers of Americans began to consider anyone with "one drop" of known "Black blood" to be Black, regardless of appearance.3 By the early 20th century, this notion was made statutory in many states.4 Amerindians continue to be defined by a certain percentage of "Indian blood" (called blood quantum). To be White one had to have perceived "pure" White ancestry. The one-drop rule or hypodescent rule refers to the convention of defining a person as racially black if he or she has any known African ancestry. This rule meant that those that were mixed race but with some discernible African ancestry were defined as black. The one-drop rule is specific to not only those with African ancestry but to the United States, making it a particularly African-American experience. | Groups of people have been classified as belonging to difference races since what part of the U.S.'s history? | {
"answer_start": [
10
],
"text": [
"early"
]
} |
57293db73f37b3190047817b | Race_(human_categorization) | Other researchers point out that finding a difference in disease prevalence between two socially defined groups does not necessarily imply genetic causation of the difference. They suggest that medical practices should maintain their focus on the individual rather than an individual's membership to any group. They argue that overemphasizing genetic contributions to health disparities carries various risks such as reinforcing stereotypes, promoting racism or ignoring the contribution of non-genetic factors to health disparities. International epidemiological data show that living conditions rather than race make the biggest difference in health outcomes even for diseases that have "race-specific" treatments. Some studies have found that patients are reluctant to accept racial categorization in medical practice. | What does finding a difference in disease prevalence between two socially defined groups not necessarily imply? | {
"answer_start": [
139
],
"text": [
"genetic causation of the difference"
]
} |
57293db73f37b3190047817e | Race_(human_categorization) | Other researchers point out that finding a difference in disease prevalence between two socially defined groups does not necessarily imply genetic causation of the difference. They suggest that medical practices should maintain their focus on the individual rather than an individual's membership to any group. They argue that overemphasizing genetic contributions to health disparities carries various risks such as reinforcing stereotypes, promoting racism or ignoring the contribution of non-genetic factors to health disparities. International epidemiological data show that living conditions rather than race make the biggest difference in health outcomes even for diseases that have "race-specific" treatments. Some studies have found that patients are reluctant to accept racial categorization in medical practice. | What is makes more of a difference than race in health outcomes for "race specific" diseases? | {
"answer_start": [
579
],
"text": [
"living conditions"
]
} |
572944df6aef051400154c28 | Race_(human_categorization) | Mass incarceration in the United States disproportionately impacts African American and Latino communities. Michelle Alexander, author of The New Jim Crow: Mass Incarceration in the Age of Colorblindness (2010), argues that mass incarceration is best understood as not only a system of overcrowded prisons. Mass incarceration is also, "the larger web of laws, rules, policies, and customs that control those labeled criminals both in and out of prison." She defines it further as "a system that locks people not only behind actual bars in actual prisons, but also behind virtual bars and virtual walls", illustrating the second-class citizenship that is imposed on a disproportionate number of people of color, specifically African-Americans. She compares mass incarceration to Jim Crow laws, stating that both work as racial caste systems. | What type of caste system is mass incarceration compared to? | {
"answer_start": [
819
],
"text": [
"racial"
]
} |
572946336aef051400154c43 | Race_(human_categorization) | Abu el-Haj argues that genomics and the mapping of lineages and clusters liberates "the new racial science from the older one by disentangling ancestry from culture and capacity."[citation needed] As an example, she refers to recent work by Hammer et al., which aimed to test the claim that present-day Jews are more closely related to one another than to neighbouring non-Jewish populations. Hammer et al. found that the degree of genetic similarity among Jews shifted depending on the locus investigated, and suggested that this was the result of natural selection acting on particular loci. They focused on the non-recombining Y-chromosome to "circumvent some of the complications associated with selection". | Hammer and others recently aimed to test what claim about how closely related present-day Jews are to what group? | {
"answer_start": [
356
],
"text": [
"neighbouring non-Jewish populations"
]
} |
57293f201d046914007791ed | United_States_presidential_election,_2004 | Bush focused his campaign on national security, presenting himself as a decisive leader and contrasted Kerry as a "flip-flopper." This strategy was designed to convey to American voters the idea that Bush could be trusted to be tough on terrorism while Kerry would be "uncertain in the face of danger." Bush (just as his father did with Dukakis in the 1988 election) also sought to portray Kerry as a "Massachusetts liberal" who was out of touch with mainstream Americans. One of Kerry's slogans was "Stronger at home, respected in the world." This advanced the suggestion that Kerry would pay more attention to domestic concerns; it also encapsulated Kerry's contention that Bush had alienated American allies by his foreign policy. | The stategy that Bush used against Kerry was compared to what other similar strategy in the past? | {
"answer_start": [
309
],
"text": [
"just as his father did with Dukakis in the 1988 election"
]
} |
5728db062ca10214002da9b0 | Liberal_Party_of_Australia | Menzies called a conference of conservative parties and other groups opposed to the ruling Australian Labor Party, which met in Canberra on 13 October 1944 and again in Albury, New South Wales in December 1944. From 1942 onward Menzies had maintained his public profile with his series of "The Forgotten People" radio talks–similar to Franklin D. Roosevelt's "fireside chats" of the 1930s–in which he spoke of the middle class as the "backbone of Australia" but as nevertheless having been "taken for granted" by political parties. | To what are Menzies' "Forgotten People" radio talks compared to? | {
"answer_start": [
335
],
"text": [
"Franklin D. Roosevelt's \"fireside chats\""
]
} |
57290ea56aef0514001549fe | Software_testing | Although testing can determine the correctness of software under the assumption of some specific hypotheses (see hierarchy of testing difficulty below), testing cannot identify all the defects within software. Instead, it furnishes a criticism or comparison that compares the state and behavior of the product against oracles—principles or mechanisms by which someone might recognize a problem. These oracles may include (but are not limited to) specifications, contracts, comparable products, past versions of the same product, inferences about intended or expected purpose, user or customer expectations, relevant standards, applicable laws, or other criteria. | What does the software compare during testing against? | {
"answer_start": [
318
],
"text": [
"oracles—principles or mechanisms"
]
} |
57291acd3f37b3190047801d | Software_testing | Black-box testing treats the software as a "black box", examining functionality without any knowledge of internal implementation, without seeing the source code. The testers are only aware of what the software is supposed to do, not how it does it. Black-box testing methods include: equivalence partitioning, boundary value analysis, all-pairs testing, state transition tables, decision table testing, fuzz testing, model-based testing, use case testing, exploratory testing and specification-based testing. | What is the main difference between black-box testing and white-box testing? | {
"answer_start": [
138
],
"text": [
"seeing the source code"
]
} |
572940641d046914007791fd | Software_testing | Regression testing focuses on finding defects after a major code change has occurred. Specifically, it seeks to uncover software regressions, as degraded or lost features, including old bugs that have come back. Such regressions occur whenever software functionality that was previously working correctly, stops working as intended. Typically, regressions occur as an unintended consequence of program changes, when the newly developed part of the software collides with the previously existing code. Common methods of regression testing include re-running previous sets of test-cases and checking whether previously fixed faults have re-emerged. The depth of testing depends on the phase in the release process and the risk of the added features. They can either be complete, for changes added late in the release or deemed to be risky, or be very shallow, consisting of positive tests on each feature, if the changes are early in the release or deemed to be of low risk. Regression testing is typically the largest test effort in commercial software development, due to checking numerous details in prior software features, and even new software can be developed while using some old test-cases to test parts of the new design to ensure prior functionality is still supported. | If changes need to occur during the softwares early release with regression testing how much of an impact does this have on the team as related to other testing? | {
"answer_start": [
995
],
"text": [
"typically the largest test effort in commercial software development"
]
} |
57292a1e1d046914007790ff | Glass | Naturally occurring glass, especially the volcanic glass obsidian, has been used by many Stone Age societies across the globe for the production of sharp cutting tools and, due to its limited source areas, was extensively traded. But in general, archaeological evidence suggests that the first true glass was made in coastal north Syria, Mesopotamia or ancient Egypt. The earliest known glass objects, of the mid third millennium BCE, were beads, perhaps initially created as accidental by-products of metal-working (slags) or during the production of faience, a pre-glass vitreous material made by a process similar to glazing. | What glass-like material is made with a method related to glazing? | {
"answer_start": [
552
],
"text": [
"faience"
]
} |
572964476aef051400154de7 | Glass | Addition of lead(II) oxide lowers melting point, lowers viscosity of the melt, and increases refractive index. Lead oxide also facilitates solubility of other metal oxides and is used in colored glasses. The viscosity decrease of lead glass melt is very significant (roughly 100 times in comparison with soda glasses); this allows easier removal of bubbles and working at lower temperatures, hence its frequent use as an additive in vitreous enamels and glass solders. The high ionic radius of the Pb2+ ion renders it highly immobile in the matrix and hinders the movement of other ions; lead glasses therefore have high electrical resistance, about two orders of magnitude higher than soda-lime glass (108.5 vs 106.5 Ohm·cm, DC at 250 °C). For more details, see lead glass. | How much less viscous is lead glass compared with soda glass? | {
"answer_start": [
275
],
"text": [
"100 times"
]
} |
572961c26aef051400154dcd | Palermo | After dynastic quarrels however, there was a Christian reconquest in 1072. The family who returned the city to Christianity were called the Hautevilles, including Robert Guiscard and his army, who is regarded as a hero by the natives. It was under Roger II of Sicily that Norman holdings in Sicily and the southern part of the Italian Peninsula were promoted from the County of Sicily into the Kingdom of Sicily. The Kingdom's capital was Palermo, with the King's Court held at the Palazzo dei Normanni. Much construction was undertaken during this period, such as the building of Palermo Cathedral. The Kingdom of Sicily became one of the wealthiest states in Europe. | How did the Kingdom of Sicily compare monetarily with the other European staes? | {
"answer_start": [
629
],
"text": [
"one of the wealthiest states in Europe"
]
} |
5729684b6aef051400154e33 | Palermo | Palermo experiences a hot-summer Mediterranean climate (Köppen climate classification: Csa). Winters are cool and wet, while summers are hot and dry. Temperatures in autumn and spring are usually mild. Palermo is one of the warmest cities in Europe (mainly due to its warm nights), with an average annual air temperature of 18.5 °C (65.3 °F). It receives approximately 2,530 hours of sunshine per year. Snow is usually a rare occurrence, but it does occur occasionally if there is a cold front, as the Apennines are too distant to protect the island from cold winds blowing from the Balkans, and the mountains surrounding the city facilite the formation of snow accumulation in Palermo, especially at night. Between the 1940s and the 2000s there have been eleven times when considerable snowfall has occurred: In 1949, in 1956, when the minimum temperature went down to 0 °C (32 °F) and the city was blanketed by several centimeters of snow. Snow also occurred in 1999, 2009 and 2015. The average annual temperature of the sea is above 19 °C (66 °F); from 14 °C (57 °F) in February to 26 °C (79 °F) in August. In the period from May to November, the average sea temperature exceeds 18 °C (64 °F) and in the period from June to October, the average sea temperature exceeds 21 °C (70 °F). | How do Palermo's temperatures compare to the rest of Europe? | {
"answer_start": [
213
],
"text": [
"one of the warmest cities in Europe"
]
} |
572b83d2111d821400f38ec3 | Zinc | For fortification, however, a 2003 review recommended zinc oxide in cereals as cheap, stable, and as easily absorbed as more expensive forms. A 2005 study found that various compounds of zinc, including oxide and sulfate, did not show statistically significant differences in absorption when added as fortificants to maize tortillas. A 1987 study found that zinc picolinate was better absorbed than zinc gluconate or zinc citrate. However, a study published in 2008 determined that zinc glycinate is the best absorbed of the four dietary supplement types available. | In what product did various compounds of zinc show little difference in absorption? | {
"answer_start": [
317
],
"text": [
"maize tortillas"
]
} |
5729e7a86aef0514001550f0 | Energy | Another energy-related concept is called the Lagrangian, after Joseph-Louis Lagrange. This formalism is as fundamental as the Hamiltonian, and both can be used to derive the equations of motion or be derived from them. It was invented in the context of classical mechanics, but is generally useful in modern physics. The Lagrangian is defined as the kinetic energy minus the potential energy. Usually, the Lagrange formalism is mathematically more convenient than the Hamiltonian for non-conservative systems (such as systems with friction). | What is another energy-related concept? | {
"answer_start": [
45
],
"text": [
"Lagrangian"
]
} |
572a023f1d046914007796c7 | Energy | This principle is vitally important to understanding the behaviour of a quantity closely related to energy, called entropy. Entropy is a measure of evenness of a distribution of energy between parts of a system. When an isolated system is given more degrees of freedom (i.e., given new available energy states that are the same as existing states), then total energy spreads over all available degrees equally without distinction between "new" and "old" degrees. This mathematical result is called the second law of thermodynamics. | What is the principle that is vitally important to understanding the behaviour of a quantity closely related to energy? | {
"answer_start": [
115
],
"text": [
"entropy"
]
} |
572a3c5c3f37b31900478804 | Ottoman_Empire | Before the reforms of the 19th and 20th centuries, the state organisation of the Ottoman Empire was a simple system that had two main dimensions, which were the military administration and the civil administration. The Sultan was the highest position in the system. The civil system was based on local administrative units based on the region's characteristics. The Ottomans practiced a system in which the state (as in the Byzantine Empire) had control over the clergy. Certain pre-Islamic Turkish traditions that had survived the adoption of administrative and legal practices from Islamic Iran remained important in Ottoman administrative circles. According to Ottoman understanding, the state's primary responsibility was to defend and extend the land of the Muslims and to ensure security and harmony within its borders within the overarching context of orthodox Islamic practice and dynastic sovereignty. | What was the main responsibility of the Ottoman state as it relates to lands? | {
"answer_start": [
726
],
"text": [
"to defend and extend the land of the Muslims"
]
} |
572a586fb8ce0319002e2ac4 | Ottoman_Empire | Under the millet system, non-Muslim people were considered subjects of the Empire, but were not subject to the Muslim faith or Muslim law. The Orthodox millet, for instance, was still officially legally subject to Justinian's Code, which had been in effect in the Byzantine Empire for 900 years. Also, as the largest group of non-Muslim subjects (or zimmi) of the Islamic Ottoman state, the Orthodox millet was granted a number of special privileges in the fields of politics and commerce, and had to pay higher taxes than Muslim subjects. | Being a non-muslim in the Empire resulted in what as it related to taxes? | {
"answer_start": [
505
],
"text": [
"higher taxes"
]
} |
572a5969b8ce0319002e2ad6 | Ottoman_Empire | The Ottomans absorbed some of the traditions, art and institutions of cultures in the regions they conquered, and added new dimensions to them. Numerous traditions and cultural traits of previous empires (in fields such as architecture, cuisine, music, leisure and government) were adopted by the Ottoman Turks, who elaborated them into new forms, which resulted in a new and distinctively Ottoman cultural identity. Despite newer added amalgamations, the Ottoman dynasty, like their predecessors in the Sultanate of Rum and the Seljuk Empire, were thoroughly Persianised in their culture, language, habits and customs, and therefore, the empire has been described as a Persianate empire. Intercultural marriages also played their part in creating the characteristic Ottoman elite culture. When compared to the Turkish folk culture, the influence of these new cultures in creating the culture of the Ottoman elite was clear. | What is one way that the Empire was described as it related to culture? | {
"answer_start": [
670
],
"text": [
"Persianate empire"
]
} |
572a21741d046914007797c4 | Philosophy_of_space_and_time | Einstein partially advocates Mach's principle in that distant stars explain inertia because they provide the gravitational field against which acceleration and inertia occur. But contrary to Leibniz's account, this warped space-time is as integral a part of an object as are its other defining characteristics, such as volume and mass. If one holds, contrary to idealist beliefs, that objects exist independently of the mind, it seems that relativistics commits them to also hold that space and temporality have exactly the same type of independent existence. | How Einstein's theory compared to Leibniz's? | {
"answer_start": [
179
],
"text": [
"contrary"
]
} |
572a3398af94a219006aa88b | Neolithic | Another significant change undergone by many of these newly agrarian communities was one of diet. Pre-agrarian diets varied by region, season, available local plant and animal resources and degree of pastoralism and hunting. Post-agrarian diet was restricted to a limited package of successfully cultivated cereal grains, plants and to a variable extent domesticated animals and animal products. Supplementation of diet by hunting and gathering was to variable degrees precluded by the increase in population above the carrying capacity of the land and a high sedentary local population concentration. In some cultures, there would have been a significant shift toward increased starch and plant protein. The relative nutritional benefits and drawbacks of these dietary changes and their overall impact on early societal development is still debated. | What food related trend was significant in the new agrarian societies? | {
"answer_start": [
92
],
"text": [
"diet"
]
} |
572a5c54fed8de19000d5ba5 | Friedrich_Hayek | From 1962 until his retirement in 1968, he was a professor at the University of Freiburg, West Germany, where he began work on his next book, Law, Legislation and Liberty. Hayek regarded his years at Freiburg as "very fruitful". Following his retirement, Hayek spent a year as a visiting professor of philosophy at the University of California, Los Angeles, where he continued work on Law, Legislation and Liberty, teaching a graduate seminar by the same name and another on the philosophy of social science. Primary drafts of the book were completed by 1970, but Hayek chose to rework his drafts and finally brought the book to publication in three volumes in 1973, 1976 and 1979. | During his time in Los Angeles, what was the topic of the seminars Hayek taught not related to his new book? | {
"answer_start": [
479
],
"text": [
"philosophy of social science"
]
} |
572a8598111d821400f38ba6 | Friedrich_Hayek | Hayek disapproved of the notion of 'social justice'. He compared the market to a game in which 'there is no point in calling the outcome just or unjust' and argued that 'social justice is an empty phrase with no determinable content'; likewise "the results of the individual's efforts are necessarily unpredictable, and the question as to whether the resulting distribution of incomes is just has no meaning". He generally regarded government redistribution of income or capital as an unacceptable intrusion upon individual freedom: "the principle of distributive justice, once introduced, would not be fulfilled until the whole of society was organized in accordance with it. This would produce a kind of society which in all essential respects would be the opposite of a free society." | What reason does Hayek provide for differences in income distribution not being a matter of just or unjust? | {
"answer_start": [
245
],
"text": [
"the results of the individual's efforts are necessarily unpredictable"
]
} |
572a6ea1d562191400bc86d4 | Madrasa | The Arabic term ijāzat al-tadrīs was awarded to Islamic scholars who were qualified to teach. According to Makdisi, the Latin title licentia docendi 'licence to teach' in the European university may have been a translation of the Arabic, but the underlying concept was very different. A significant difference between the ijāzat al-tadrīs and the licentia docendi was that the former was awarded by the individual scholar-teacher, while the latter was awarded by the chief official of the university, who represented the collective faculty, rather than the individual scholar-teacher. | What type of license is closely related to the ijazat al-tadris? | {
"answer_start": [
132
],
"text": [
"licentia docendi"
]
} |
572b3ab4111d821400f38de7 | Empiricism | Most of Hume's followers have disagreed with his conclusion that belief in an external world is rationally unjustifiable, contending that Hume's own principles implicitly contained the rational justification for such a belief, that is, beyond being content to let the issue rest on human instinct, custom and habit. According to an extreme empiricist theory known as phenomenalism, anticipated by the arguments of both Hume and George Berkeley, a physical object is a kind of construction out of our experiences. Phenomenalism is the view that physical objects, properties, events (whatever is physical) are reducible to mental objects, properties, events. Ultimately, only mental objects, properties, events, exist — hence the closely related term subjective idealism. By the phenomenalistic line of thinking, to have a visual experience of a real physical thing is to have an experience of a certain kind of group of experiences. This type of set of experiences possesses a constancy and coherence that is lacking in the set of experiences of which hallucinations, for example, are a part. As John Stuart Mill put it in the mid-19th century, matter is the "permanent possibility of sensation". Mill's empiricism went a significant step beyond Hume in still another respect: in maintaining that induction is necessary for all meaningful knowledge including mathematics. As summarized by D.W. Hamlin: | What is subjective idealism closely related to? | {
"answer_start": [
513
],
"text": [
"Phenomenalism"
]
} |
572b7a8ff75d5e190021fdf9 | Idealism | J. M. E. McTaggart of Cambridge University, argued that minds alone exist and only relate to each other through love. Space, time and material objects are unreal. In The Unreality of Time he argued that time is an illusion because it is impossible to produce a coherent account of a sequence of events. The Nature of Existence (1927) contained his arguments that space, time, and matter cannot possibly be real. In his Studies in Hegelian Cosmology (Cambridge, 1901, p196) he declared that metaphysics are not relevant to social and political action. McTaggart "thought that Hegel was wrong in supposing that metaphysics could show that the state is more than a means to the good of the individuals who compose it". For McTaggart "philosophy can give us very little, if any, guidance in action... Why should a Hegelian citizen be surprised that his belief as to the organic nature of the Absolute does not help him in deciding how to vote? Would a Hegelian engineer be reasonable in expecting that his belief that all matter is spirit should help him in planning a bridge? | How does McTaggart believe minds relate to one another? | {
"answer_start": [
112
],
"text": [
"love"
]
} |
572bbcad34ae481900deaef3 | Education | Intelligence is an important factor in how the individual responds to education. Those who have higher intelligence tend to perform better at school and go on to higher levels of education. This effect is also observable in the opposite direction, in that education increases measurable intelligence. Studies have shown that while educational attainment is important in predicting intelligence in later life, intelligence at 53 is more closely correlated to intelligence at 8 years old than to educational attainment. | What is intelligence at 53 more closely related to? | {
"answer_start": [
458
],
"text": [
"intelligence at 8"
]
} |
572bc28a111d821400f38f78 | Education | It has been argued that high rates of education are essential for countries to be able to achieve high levels of economic growth. Empirical analyses tend to support the theoretical prediction that poor countries should grow faster than rich countries because they can adopt cutting edge technologies already tried and tested by rich countries. However, technology transfer requires knowledgeable managers and engineers who are able to operate new machines or production practices borrowed from the leader in order to close the gap through imitation. Therefore, a country's ability to learn from the leader is a function of its stock of "human capital". Recent study of the determinants of aggregate economic growth have stressed the importance of fundamental economic institutions and the role of cognitive skills. | What is greatly needed with technology transfer when it relates to education? | {
"answer_start": [
373
],
"text": [
"requires knowledgeable managers and engineers"
]
} |
572bc3cf111d821400f38f7c | Education | At the level of the individual, there is a large literature, generally related to the work of Jacob Mincer, on how earnings are related to the schooling and other human capital. This work has motivated a large number of studies, but is also controversial. The chief controversies revolve around how to interpret the impact of schooling. Some students who have indicated a high potential for learning, by testing with a high intelligence quotient, may not achieve their full academic potential, due to financial difficulties.[citation needed] | Literature on how earnings and how it relates to schooling was greatly influenced by who? | {
"answer_start": [
94
],
"text": [
"Jacob Mincer"
]
} |
572e6bacc246551400ce422e | Post-punk | Generally, post-punk music is defined as music that emerged from the cultural milieu of punk rock in the late 1970s, although many groups now categorized as post-punk were initially subsumed under the broad umbrella of punk or new wave music, only becoming differentiated as the terms came to signify more narrow styles. Additionally, the accuracy of the term's chronological prefix "post" has been disputed, as various groups commonly labeled post-punk in fact predate the punk rock movement. Reynolds defined the post-punk era as occurring loosely between 1978 and 1984. | Why has the prefix 'post' caused a bit of dispute as it relates to various post-punk groups? | {
"answer_start": [
462
],
"text": [
"predate the punk rock movement"
]
} |
572ead8003f9891900756923 | Seven_Years%27_War | The British—by inclination as well as for practical reasons—had tended to avoid large-scale commitments of troops on the Continent. They sought to offset the disadvantage of this in Europe by allying themselves with one or more Continental powers whose interests were antithetical to those of their enemies, particularly France.:15–16 By subsidising the armies of continental allies, Britain could turn London's enormous financial power to military advantage. In the Seven Years' War, the British chose as their principal partner the greatest general of the day, Frederick the Great of Prussia, then the rising power in central Europe, and paid Frederick substantial subsidies for his campaigns.:106 This was accomplished in the Diplomatic Revolution of 1756, in which Britain ended its long-standing alliance with Austria in favor of Prussia, leaving Austria to side with France. In marked contrast to France, Britain strove to prosecute the war actively in the colonies, taking full advantage of its naval power. :64–66 The British pursued a dual strategy – naval blockade and bombardment of enemy ports, and rapid movement of troops by sea. They harassed enemy shipping and attacked enemy colonies, frequently using colonists from nearby British colonies in the effort. | How did the British behave in defending their colonies compared to the French approach? | {
"answer_start": [
881
],
"text": [
"In marked contrast to France, Britain strove to prosecute the war actively in the colonies"
]
} |
572eb4c8cb0c0d14000f149e | Seven_Years%27_War | The British Prime Minister, the Duke of Newcastle, was optimistic that the new series of alliances could prevent war from breaking out in Europe. However, a large French force was assembled at Toulon, and the French opened the campaign against the British by an attack on Minorca in the Mediterranean. A British attempt at relief was foiled at the Battle of Minorca, and the island was captured on 28 June (for which Admiral Byng was court-martialed and executed). War between Britain and France had been formally declared on 18 May nearly two years after fighting had broken out in the Ohio Country. | How did the timing of the declaration of war compare to the conflicts in North America between Britain and France? | {
"answer_start": [
533
],
"text": [
"nearly two years after fighting had broken out in the Ohio Country."
]
} |
572e90e4cb0c0d14000f12c0 | Richard_Feynman | Feynman had a great deal of success teaching Carl, using, for example, discussions about ants and Martians as a device for gaining perspective on problems and issues. He was surprised to learn that the same teaching devices were not useful with Michelle. Mathematics was a common interest for father and son; they both entered the computer field as consultants and were involved in advancing a new method of using multiple computers to solve complex problems—later known as parallel computing. The Jet Propulsion Laboratory retained Feynman as a computational consultant during critical missions. One co-worker characterized Feynman as akin to Don Quixote at his desk, rather than at a computer workstation, ready to do battle with the windmills. | What fictional character was Feynman compared to by a colleague? | {
"answer_start": [
644
],
"text": [
"Don Quixote"
]
} |
57318f36e6313a140071d094 | Muammar_Gaddafi | A fundamental part of Gaddafi's ideology was anti-Zionism. He believed that the state of Israel should not exist, and that any Arab compromise with the Israeli government was a betrayal of the Arab people. In large part due to their support of Israel, Gaddafi despised the United States, considering the country to be imperialist and lambasting it as "the embodiment of evil." Rallying against Jews in many of his speeches, his anti-Semitism has been described as "almost Hitlerian" by Blundy and Lycett. From the late 1990s onward, his view seemed to become more moderate. In 2007, he advocated the Isratin single-state solution to the Israeli–Palestinian conflict, stating that "the [Israel-Palestine] solution is to establish a democratic state for the Jews and the Palestinians... This is the fundamental solution, or else the Jews will be annihilated in the future, because the Palestinians have [strategic] depth." Two years later he argued that a single-state solution would "move beyond old conflicts and look to a unified future based on shared culture and respect." | Who compared Gaddafi to Hitler? | {
"answer_start": [
486
],
"text": [
"Blundy and Lycett"
]
} |
572e9610cb0c0d14000f1315 | Cyprus | The middle of summer is hot – in July and August on the coast the average temperature is usually around 33 °C (91 °F) during the day and around 22 °C (72 °F) at night (inland, in the highlands average temperature exceeds 35 °C (95 °F)) while in the June and September on the coast the average temperature is usually around 30 °C (86 °F) during the day and around 20 °C (68 °F) at night in Limassol, while is usually around 28 °C (82 °F) during the day and around 18 °C (64 °F) at night in Paphos. Large fluctuations in temperature are rare. Inland temperatures are more extreme, with colder winters and hotter summers compared with the coast of the island. | Where are temperatures more extreme compared to the coast of Cyprus? | {
"answer_start": [
541
],
"text": [
"Inland"
]
} |
572ed638dfa6aa1500f8d432 | Elevator | Statistically speaking, cable-borne elevators are extremely safe. Their safety record is unsurpassed by any other vehicle system. In 1998, it was estimated that approximately eight millionths of one percent (1 in 12 million) of elevator rides result in an anomaly, and the vast majority of these were minor things such as the doors failing to open. Of the 20 to 30 elevator-related deaths each year, most of them are maintenance-related — for example, technicians leaning too far into the shaft or getting caught between moving parts, and most of the rest are attributed to other kinds of accidents, such as people stepping blindly through doors that open into empty shafts or being strangled by scarves caught in the doors. In fact, prior to the September 11th terrorist attacks, the only known free-fall incident in a modern cable-borne elevator happened in 1945 when a B-25 bomber struck the Empire State Building in fog, severing the cables of an elevator cab, which fell from the 75th floor all the way to the bottom of the building, seriously injuring (though not killing) the sole occupant — the elevator operator. However, there was an incident in 2007 at a Seattle children's hospital, where a ThyssenKrupp ISIS machine-room-less elevator free-fell until the safety brakes were engaged. This was due to a flaw in the design where the cables were connected at one common point, and the kevlar ropes had a tendency to overheat and cause slipping (or, in this case, a free-fall). While it is possible (though extraordinarily unlikely) for an elevator's cable to snap, all elevators in the modern era have been fitted with several safety devices which prevent the elevator from simply free-falling and crashing. An elevator cab is typically borne by 2 to 6 (up to 12 or more in high rise installations) hoist cables or belts, each of which is capable on its own of supporting the full load of the elevator plus twenty-five percent more weight. In addition, there is a device which detects whether the elevator is descending faster than its maximum designed speed; if this happens, the device causes copper (or silicon nitride in high rise installations) brake shoes to clamp down along the vertical rails in the shaft, stopping the elevator quickly, but not so abruptly as to cause injury. This device is called the governor, and was invented by Elisha Graves Otis. In addition, a oil/hydraulic or spring or polyurethane or telescopic oil/hydraulic buffer or a combination (depending on the travel height and travel speed) is installed at the bottom of the shaft (or in the bottom of the cab and sometimes also in the top of the cab or shaft) to somewhat cushion any impact. However, In Thailand, in November 2012, a woman was killed in free falling elevator, in what was reported as the "first legally recognised death caused by a falling lift". | What is an example of a maintenance-related elevator death? | {
"answer_start": [
452
],
"text": [
"technicians leaning too far into the shaft or getting caught between moving parts"
]
} |
572e82d1c246551400ce428d | Neptune | Neptune is the eighth and farthest known planet from the Sun in the Solar System. It is the fourth-largest planet by diameter and the third-largest by mass. Among the giant planets in the Solar System, Neptune is the most dense. Neptune is 17 times the mass of Earth and is slightly more massive than its near-twin Uranus, which is 15 times the mass of Earth and slightly larger than Neptune.[c] Neptune orbits the Sun once every 164.8 years at an average distance of 30.1 astronomical units (4.50×109 km). Named after the Roman god of the sea, its astronomical symbol is ♆, a stylised version of the god Neptune's trident. | How much more dense is Neptune compared to Earth? | {
"answer_start": [
240
],
"text": [
"17 times"
]
} |
572e939ecb0c0d14000f12f5 | Neptune | Neptune's mass of 1.0243×1026 kg, is intermediate between Earth and the larger gas giants: it is 17 times that of Earth but just 1/19th that of Jupiter.[d] Its gravity at 1 bar is 11.15 m/s2, 1.14 times the surface gravity of Earth, and surpassed only by Jupiter. Neptune's equatorial radius of 24,764 km is nearly four times that of Earth. Neptune, like Uranus, is an ice giant, a subclass of giant planet, due to their smaller size and higher concentrations of volatiles relative to Jupiter and Saturn. In the search for extrasolar planets, Neptune has been used as a metonym: discovered bodies of similar mass are often referred to as "Neptunes", just as scientists refer to various extrasolar bodies as "Jupiters". | How much more mass does Neptune have compared to Earth? | {
"answer_start": [
97
],
"text": [
"17 times"
]
} |
572e9983cb0c0d14000f1330 | Neptune | At high altitudes, Neptune's atmosphere is 80% hydrogen and 19% helium. A trace amount of methane is also present. Prominent absorption bands of methane exist at wavelengths above 600 nm, in the red and infrared portion of the spectrum. As with Uranus, this absorption of red light by the atmospheric methane is part of what gives Neptune its blue hue, although Neptune's vivid azure differs from Uranus's milder cyan. Because Neptune's atmospheric methane content is similar to that of Uranus, some unknown atmospheric constituent is thought to contribute to Neptune's colour. | What color is Uranus, compared to Neptune? | {
"answer_start": [
413
],
"text": [
"cyan"
]
} |
572e9d16c246551400ce43fa | Neptune | High-altitude clouds on Neptune have been observed casting shadows on the opaque cloud deck below. There are also high-altitude cloud bands that wrap around the planet at constant latitude. These circumferential bands have widths of 50–150 km and lie about 50–110 km above the cloud deck. These altitudes are in the layer where weather occurs, the troposphere. Weather does not occur in the higher stratosphere or thermosphere. Unlike Uranus, Neptune's composition has a higher volume of ocean, whereas Uranus has a smaller mantle. | What does Neptune have more of compared to Uranus? | {
"answer_start": [
478
],
"text": [
"volume of ocean"
]
} |
572ea25103f989190075686f | Neptune | The dipole component of the magnetic field at the magnetic equator of Neptune is about 14 microteslas (0.14 G). The dipole magnetic moment of Neptune is about 2.2 × 1017 T·m3 (14 μT·RN3, where RN is the radius of Neptune). Neptune's magnetic field has a complex geometry that includes relatively large contributions from non-dipolar components, including a strong quadrupole moment that may exceed the dipole moment in strength. By contrast, Earth, Jupiter and Saturn have only relatively small quadrupole moments, and their fields are less tilted from the polar axis. The large quadrupole moment of Neptune may be the result of offset from the planet's centre and geometrical constraints of the field's dynamo generator. | Which three planets have small quadrupole moments compared to Neptune? | {
"answer_start": [
442
],
"text": [
"Earth, Jupiter and Saturn"
]
} |
572ea842dfa6aa1500f8d271 | Neptune | Neptune's more varied weather when compared to Uranus is due in part to its higher internal heating. Although Neptune lies over 50% further from the Sun than Uranus, and receives only 40% its amount of sunlight, the two planets' surface temperatures are roughly equal. The upper regions of Neptune's troposphere reach a low temperature of 51.8 K (−221.3 °C). At a depth where the atmospheric pressure equals 1 bar (100 kPa), the temperature is 72.00 K (−201.15 °C). Deeper inside the layers of gas, the temperature rises steadily. As with Uranus, the source of this heating is unknown, but the discrepancy is larger: Uranus only radiates 1.1 times as much energy as it receives from the Sun; whereas Neptune radiates about 2.61 times as much energy as it receives from the Sun. Neptune is the farthest planet from the Sun, yet its internal energy is sufficient to drive the fastest planetary winds seen in the Solar System. Depending on the thermal properties of its interior, the heat left over from Neptune's formation may be sufficient to explain its current heat flow, though it is more difficult to simultaneously explain Uranus's lack of internal heat while preserving the apparent similarity between the two planets. | How much percentage of the sun does Neptune get compared to Uranus? | {
"answer_start": [
184
],
"text": [
"40%"
]
} |
572f52bc04bcaa1900d7684a | Railway_electrification_system | Three-phase AC railway electrification was used in Italy, Switzerland and the United States in the early twentieth century. Italy was the major user, for lines in the mountainous regions of northern Italy from 1901 until 1976. The first lines were the Burgdorf-Thun line in Switzerland (1899), and the lines of the Ferrovia Alta Valtellina from Colico to Chiavenna and Tirano in Italy, which were electrified in 1901 and 1902. Other lines where the three-phase system were used were the Simplon Tunnel in Switzerland from 1906 to 1930, and the Cascade Tunnel of the Great Northern Railway in the United States from 1909 to 1927. | What country was a bigger user compare to the three of them? | {
"answer_start": [
124
],
"text": [
"Italy"
]
} |
572f5a7c947a6a140053c8ac | Railway_electrification_system | In the Soviet Union, in the 1970s, a comparison was made between systems electrified at 3 kV DC and 25 kV AC (50 Hz). The results showed that percentage losses in the overhead wires (catenary and contact wires) was over 3 times greater for 3 kV DC than for 25 kV AC. But when the conversion losses were all taken into account and added to overhead wire losses (including cooling blower energy) the 25 kV AC lost a somewhat higher percent of energy than for 3 kV DC. Thus in spite of the much higher losses in the catenary, the 3 kV DC was a little more energy efficient than AC in providing energy from the USSR power grid to the terminals of the traction motors (all DC at that time). While both systems use energy in converting higher voltage AC from the USSR's power grid to lower voltage DC, the conversions for the DC system all took place (at higher efficiency) in the railway substation, while most of the conversion for the AC system took place inside the locomotive (at lower efficiency). Consider also that it takes energy to constantly move this mobile conversion hardware over the rails while the stationary hardware in the railway substation doesn't incur this energy cost. For more details see: Wiki: Soviet Union DC vs. AC. | What two systems were compare in the Soviet Union in 1970? | {
"answer_start": [
88
],
"text": [
"3 kV DC and 25 kV AC (50 Hz"
]
} |
572f6abab2c2fd14005680f1 | Railway_electrification_system | 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. | How much more expensive was diesel compare to electricity per unit? | {
"answer_start": [
905
],
"text": [
"1.5 times more (per unit of heat energy content"
]
} |
57312bcd05b4da19006bce2f | Red | In Ancient Rome, Tyrian purple was the color of the Emperor, but red had an important religious symbolism. Romans wore togas with red stripes on holidays, and the bride at a wedding wore a red shawl, called a flammeum. Red was used to color statues and the skin of gladiators. Red was also the color associated with army; Roman soldiers wore red tunics, and officers wore a cloak called a paludamentum which, depending upon the quality of the dye, could be crimson, scarlet or purple. In Roman mythology red is associated with the god of war, Mars. The vexilloid of the Roman Empire had a red background with the letters SPQR in gold. A Roman general receiving a triumph had his entire body painted red in honor of his achievement. | What color was correlated with the Army in ancient Rome? | {
"answer_start": [
277
],
"text": [
"Red"
]
} |
573137fba5e9cc1400cdbd18 | Red | As the Industrial Revolution spread across Europe, chemists and manufacturers sought new red dyes that could be used for large-scale manufacture of textiles. One popular color imported into Europe from Turkey and India in the 18th and early 19th century was Turkey red, known in France as rouge d'Adrinople. Beginning in the 1740s, this bright red color was used to dye or print cotton textiles in England, the Netherlands and France. Turkey red used madder as the colorant, but the process was longer and more complicated, involving multiple soaking of the fabrics in lye, olive oil, sheep's dung, and other ingredients. The fabric was more expensive but resulted in a fine bright and lasting red, similar to carmine, perfectly suited to cotton. The fabric was widely exported from Europe to Africa, the Middle East and America. In 19th century America, it was widely used in making the traditional patchwork quilt. | What other pigment was Turkey red compared to? | {
"answer_start": [
710
],
"text": [
"carmine"
]
} |
5731434205b4da19006bcf88 | Red | Red is associated with dominance in a number of animal species. For example, in mandrills, red coloration of the face is greatest in alpha males, increasingly less prominent in lower ranking subordinates, and directly correlated with levels of testosterone. Red can also affect the perception of dominance by others, leading to significant differences in mortality, reproductive success and parental investment between individuals displaying red and those not. In humans, wearing red has been linked with increased performance in competitions, including professional sport and multiplayer video games. Controlled tests have demonstrated that wearing red does not increase performance or levels of testosterone during exercise, so the effect is likely to be produced by perceived rather than actual performance. Judges of tae kwon do have been shown to favor competitors wearing red protective gear over blue, and, when asked, a significant majority of people say that red abstract shapes are more "dominant", "aggressive", and "likely to win a physical competition" than blue shapes. In contrast to its positive effect in physical competition and dominance behavior, exposure to red decreases performance in cognitive tasks and elicits aversion in psychological tests where subjects are placed in an "achievement" context (e.g. taking an IQ test). | The amount of red in mandrill males is directly related to levels of what? | {
"answer_start": [
244
],
"text": [
"testosterone"
]
} |
57314df805b4da19006bd015 | Red | Red is used in modern fashion much as it was used in Medieval painting; to attract the eyes of the viewer to the person who is supposed to be the center of attention. People wearing red seem to be closer than those dressed in other colors, even if they are actually the same distance away. Monarchs, wives of Presidential candidates and other celebrities often wear red to be visible from a distance in a crowd. It is also commonly worn by lifeguards and others whose job requires them to be easily found. | What is the main impact of people wearing red as it relates to the perception of distance? | {
"answer_start": [
167
],
"text": [
"People wearing red seem to be closer"
]
} |
5731577d497a881900248e27 | Red | Red is one of the most common colors used on national flags. The use of red has similar connotations from country to country: the blood, sacrifice, and courage of those who defended their country; the sun and the hope and warmth it brings; and the sacrifice of Christ's blood (in some historically Christian nations) are a few examples. Red is the color of the flags of several countries that once belonged to the former British Empire. The British flag bears the colors red, white, and blue; it includes the cross of Saint George, patron saint of England, and the saltire of Saint Patrick, patron saint of Ireland, both of which are red on white. The flag of the United States bears the colors of Britain, the colors of the French tricolore include red as part of the old Paris coat of arms, and other countries' flags, such as those of Australia, New Zealand, and Fiji, carry a small inset of the British flag in memory of their ties to that country. Many former colonies of Spain, such as Mexico, Colombia, Ecuador, Cuba, Puerto Rico, Peru, and Venezuela, also feature red-one of the colors of the Spanish flag-on their own banners. Red flags are also used to symbolize storms, bad water conditions, and many other dangers. Navy flags are often red and yellow. Red is prominently featured in the flag of the United States Marine Corps. | As it relates to England, who is Saint George? | {
"answer_start": [
532
],
"text": [
"patron saint of England"
]
} |
57304f5e2461fd1900a9cd11 | The_Blitz | German air supremacy at night was also now under threat. British night-fighter operations out over the Channel were proving highly successful. This was not immediately apparent. The Bristol Blenheim F.1 was undergunned, with just four .303 in (7.7 mm) machine guns which struggled to down the Do 17, Ju 88, or Heinkel He 111. Moreover, the Blenheim struggled to reach the speed of the German bombers. Added to the fact an interception relied on visual sighting, a kill was most elusive even in the conditions of a moonlit sky. | How did the Bristol Blenheim F.1 compare to German aircraft speed? | {
"answer_start": [
349
],
"text": [
"struggled to reach the speed of the German bombers"
]
} |