sentence-transformers/squad huggingface dataset:
Passage: Christianity is the most widely practised religion in Galicia, as it has been since its introduction in Late Antiquity, although it lived alongside the old Gallaeci religion for a few centuries. Today about 73% of Galicians identify themselves as Christians. The largest form of Christianity practised in the present day is Catholicism, though only 20% of the population described themselves as active members. The Catholic Church in Galicia has had its primatial seat in Santiago de Compostela since the 12th century.

Question: What is Galicia's most widespread religion?

Question: What percentage of Galicians identify with this religion?
Passage: Since the Middle Ages, the Galician Catholic Church has been organized into five ecclesiastical dioceses (Lugo, Ourense, Santiago de Compostela, Mondoñedo-Ferrol and Tui-Vigo). While these may have coincided with contemporary 15th-century civil provinces, they no longer have the same boundaries as the modern civil provincial divisions. The church is led by one archbishop and four bishops. Moreover, of five dioceses, Galicia is divided between 163 districts and 3,792 parishes, a few of which are governed by administrators, the remainder by parish priests.

Question: Which church has had a large influence over Galicia since the Middle Ages?

Question: Which five positions are held by church leaders?
Passage: Hundreds of ancient standing stone monuments like dolmens, menhirs and megalithics Tumulus were erected during the prehistoric period in Galicia, amongst the best-known are the dolmens of Dombate, Corveira, Axeitos of Pedra da Arca, menhirs like the "Lapa de Gargñáns". From the Iron Age, Galicia has a rich heritage based mainly on a great number of Hill forts, few of them excavated like Baroña, Sta. Tegra, San Cibrao de Lás and Formigueiros among others. With the introduction of Ancient Roman architecture there was a development of basilicas, castra, city walls, cities, villas, Roman temples, Roman roads, and the Roman bridge of Ponte Vella. It was the Romans who founded some of the first cities in Galicia like Lugo and Ourense. Perhaps the best-known examples are the Roman Walls of Lugo and the Tower of Hercules in A Coruña.

Question: Which civilization was it that founded some of the first Galician cities?

Question: Name two of these cities.
Passage: The patron saint of Galicia is Saint James the Greater, whose body was discovered – according to the Catholic tradition – in 814 near Compostela. After that date, the relics of Saint James became an extraordinary centre of pilgrimage and from the 9th century have been kept in the heart of the church – the modern-day cathedral – dedicated to him. There are many other Galician and associated saints; some of the best-known are: Saint Ansurius, Saint Rudesind, Saint Mariña of Augas Santas, Saint Senorina, Trahamunda and Froilan.

Question: Who is Galicia's patron saint?

Question: Name another saint associated with Galicia.
Passage: In northern Galicia, the A Coruña-Ferrol metropolitan area has become increasingly dominant in terms of population. The population of the city of A Coruña in 1900 was 43,971. The population of the rest of the province including the City and Naval Station of nearby Ferrol and Santiago de Compostela was 653,556. A Coruña's growth occurred after the Spanish Civil War at the same speed as other major Galician cities, but it was the arrival of democracy in Spain after the death of Francisco Franco when A Coruña left all the other Galician cities behind.

Question: Which metro area is largest in terms of population?

Question: What was it's total population back in 1900?
Passage: Galicia's inhabitants are known as Galicians (Galician: galegos, Spanish: gallegos). For well over a century Galicia has grown more slowly than the rest of Spain, due largely to emigration to Latin America and to other parts of Spain. Sometimes Galicia has lost population in absolute terms. In 1857, Galicia had Spain's densest population and constituted 11.5% of the national population. As of 2007, only 6.1% of the Spanish population resides in the autonomous community. This is due to an exodus of Galician people since the 19th century, first to South America and later to Central Europe.

Question: What to Galician's call themselves in their language?

Question: Aside from Spain, where have Galicians emigrated to?
Passage: The Galician road network includes autopistas and autovías connecting the major cities, as well as national and secondary roads to the rest of the municipalities. The Autovía A-6 connects A Coruña and Lugo to Madrid, entering Galicia at Pedrafita do Cebreiro. The Autovía A-52 connects O Porriño, Ourense and Benavente, and enters Galicia at A Gudiña. Two more autovías are under construction. Autovía A-8 enters Galicia on the Cantabrian coast, and ends in Baamonde (Lugo province). Autovía A-76 enters Galicia in Valdeorras; it is an upgrade of the existing N-120 to Ourense and Vigo.

Question: Which Spanish city does the Autovía A-6 lead to?

Question: The Autovía A-8 enters Galicia on which coast?
Passage: The modern English word green comes from the Middle English and Anglo-Saxon word grene, from the same Germanic root as the words "grass" and "grow". It is the color of living grass and leaves and as a result is the color most associated with springtime, growth and nature. By far the largest contributor to green in nature is chlorophyll, the chemical by which plants photosynthesize and convert sunlight into chemical energy. Many creatures have adapted to their green environments by taking on a green hue themselves as camouflage. Several minerals have a green color, including the emerald, which is colored green by its chromium content.

Question: Which old english word does the word "green" originate from?

Question: Other than "grass", what other Germanic root word is similar to green?

Question: Which season is green most commonly associated with?

Question: Which chemical in plants is the largest contributor to the color green?

Question: What an is an example of a green mineral?

Question: What, in nature, is most likely to make things green?

Question: For what do some animals use the color green?

Question: What chemical causes emeralds to be green?

Question: From which Middle English and Anglo-Saxon word is green derived?
Passage: In surveys made in Europe and the United States, green is the color most commonly associated with nature, life, health, youth, spring, hope and envy. In Europe and the U.S. green is sometimes associated with death (green has several seemingly contrary associations), sickness, or the devil, but in China its associations are very positive, as the symbol of fertility and happiness. In the Middle Ages and Renaissance, when the color of clothing showed the owner's social status, green was worn by merchants, bankers and the gentry, while red was the color of the nobility. The Mona Lisa by Leonardo da Vinci wears green, showing she is not from a noble family; the benches in the British House of Commons are green, while those in the House of Lords are red. Green is also the traditional color of safety and permission; a green light means go ahead, a green card permits permanent residence in the United States. It is the most important color in Islam. It was the color of the banner of Muhammad, and is found in the flags of nearly all Islamic countries, and represents the lush vegetation of Paradise. It is also often associated with the culture of Gaelic Ireland, and is a color of the flag of Ireland. Because of its association with nature, it is the color of the environmental movement. Political groups advocating environmental protection and social justice describe themselves as part of the Green movement, some naming themselves Green parties. This has led to similar campaigns in advertising, as companies have sold green, or environmentally friendly, products.

Question: What is green a symbol of in China?

Question: In the Middle Ages, which color was associated with merchants, bankers, and the gentry?

Question: What does the Mona Lisa wearing green symbolize?

Question: What does the color green represent in the flags of Islamic countries?

Question: Why is green the color of the environmental movement?
Passage: Thus, the languages mentioned above (Germanic, Romance, Slavic, Greek) have old terms for "green" which are derived from words for fresh, sprouting vegetation. However, comparative linguistics makes clear that these terms were coined independently, over the past few millennia, and there is no identifiable single Proto-Indo-European or word for "green". For example, the Slavic zelenъ is cognate with Sanskrit hari "yellow, ochre, golden". The Turkic languages also have jašɨl "green" or "yellowish green", compared to a Mongolian word for "meadow".

Question: Germanic, Romance, Slavic, and Greek all has old terms for "green" which are derived from words for what?

Question: How were the terms for "green" derived in the Germanic, Romance, Slavic, and Greek languages?

Question: Which language has a word for "green" that is comparable to a Mongolian word for "meadow"?
Passage: In some languages, including old Chinese, Thai, old Japanese, and Vietnamese, the same word can mean either blue or green. The Chinese character 青 (pronounced qīng in Mandarin, ao in Japanese, and thanh in Sino-Vietnamese) has a meaning that covers both blue and green; blue and green are traditionally considered shades of "青". In more contemporary terms, they are 藍 (lán, in Mandarin) and 綠 (lǜ, in Mandarin) respectively. Japanese also has two terms that refer specifically to the color green, 緑 (midori, which is derived from the classical Japanese descriptive verb midoru "to be in leaf, to flourish" in reference to trees) and グリーン (guriin, which is derived from the English word "green"). However, in Japan, although the traffic lights have the same colors that other countries have, the green light is described using the same word as for blue, "aoi", because green is considered a shade of aoi; similarly, green variants of certain fruits and vegetables such as green apples, green shiso (as opposed to red apples and red shiso) will be described with the word "aoi". Vietnamese uses a single word for both blue and green, xanh, with variants such as xanh da trời (azure, lit. "sky blue"), lam (blue), and lục (green; also xanh lá cây, lit. "leaf green").

Question: How many terms does Japanese have for the color green?

Question: What is the Vietnamese word for both blue and green?

Question: What are the colors of traffic lights in Japan?
Passage: "Green" in modern European languages corresponds to about 520–570 nm, but many historical and non-European languages make other choices, e.g. using a term for the range of ca. 450–530 nm ("blue/green") and another for ca. 530–590 nm ("green/yellow").[citation needed] In the comparative study of color terms in the world's languages, green is only found as a separate category in languages with the fully developed range of six colors (white, black, red, green, yellow, and blue), or more rarely in systems with five colors (white, red, yellow, green, and black/blue). (See distinction of green from blue) These languages have introduced supplementary vocabulary to denote "green", but these terms are recognizable as recent adoptions that are not in origin color terms (much like the English adjective orange being in origin not a color term but the name of a fruit). Thus, the Thai word เขียว besides meaning "green" also means "rank" and "smelly" and holds other unpleasant associations.

Question: In which language does the word for "green" also mean "rank" and "smelly"?

Question: In what range does the color green fall in modern European languages?

Question: What is the origin of the word "orange"?
Passage: In the subtractive color system, used in painting and color printing, green is created by a combination of yellow and blue, or yellow and cyan; in the RGB color model, used on television and computer screens, it is one of the additive primary colors, along with red and blue, which are mixed in different combinations to create all other colors. On the HSV color wheel, also known as the RGB color wheel, the complement of green is magenta; that is, a color corresponding to an equal mixture of red and blue light (one of the purples). On a traditional color wheel, based on subtractive color, the complementary color to green is considered to be red.

Question: In which color system is green created by combining yellow and blue?

Question: In which color model is green one of the additive primary colors?

Question: What is the complement of green on the HSV color wheel?

Question: What is the complement of green on the traditional color wheel?
Passage: In additive color devices such as computer displays and televisions, one of the primary light sources is typically a narrow-spectrum yellowish-green of dominant wavelength ~550 nm; this "green" primary is combined with an orangish-red "red" primary and a purplish-blue "blue" primary to produce any color in between – the RGB color model. A unique green (green appearing neither yellowish nor bluish) is produced on such a device by mixing light from the green primary with some light from the blue primary.

Question: What is produced on a computer display when light from the green primary is mixed with some light from the blue primary?

Question: At what wavelength is green on computer displays?

Question: What type of color devices are computer displays and televisions?
Passage: Lasers emitting in the green part of the spectrum are widely available to the general public in a wide range of output powers. Green laser pointers outputting at 532 nm (563.5 THz) are relatively inexpensive compared to other wavelengths of the same power, and are very popular due to their good beam quality and very high apparent brightness. The most common green lasers use diode pumped solid state (DPSS) technology to create the green light. An infrared laser diode at 808 nm is used to pump a crystal of neodymium-doped yttrium vanadium oxide (Nd:YVO4) or neodymium-doped yttrium aluminium garnet (Nd:YAG) and induces it to emit 281.76 THz (1064 nm). This deeper infrared light is then passed through another crystal containing potassium, titanium and phosphorus (KTP), whose non-linear properties generate light at a frequency that is twice that of the incident beam (563.5 THz); in this case corresponding to the wavelength of 532 nm ("green"). Other green wavelengths are also available using DPSS technology ranging from 501 nm to 543 nm. Green wavelengths are also available from gas lasers, including the helium–neon laser (543 nm), the Argon-ion laser (514 nm) and the Krypton-ion laser (521 nm and 531 nm), as well as liquid dye lasers. Green lasers have a wide variety of applications, including pointing, illumination, surgery, laser light shows, spectroscopy, interferometry, fluorescence, holography, machine vision, non-lethal weapons and bird control.

Question: Which color of lasers are widely available to the general public?

Question: What is the wavelength of inexpensive green lasers?

Question: What type of technology is used in the most common green lasers?

Question: What is the range of green wavelengths available when using DPSS technology?
Passage: Many minerals provide pigments which have been used in green paints and dyes over the centuries. Pigments, in this case, are minerals which reflect the color green, rather that emitting it through luminescent or phosphorescent qualities. The large number of green pigments makes it impossible to mention them all. Among the more notable green minerals, however is the emerald, which is colored green by trace amounts of chromium and sometimes vanadium. Chromium(III) oxide (Cr2O3), is called chrome green, also called viridian or institutional green when used as a pigment. For many years, the source of amazonite's color was a mystery. Widely thought to have been due to copper because copper compounds often have blue and green colors, the blue-green color is likely to be derived from small quantities of lead and water in the feldspar. Copper is the source of the green color in malachite pigments, chemically known as basic copper(II) carbonate.

Question: What do pigments do with the color green?

Question: What are green paints and dyes usually made of?

Question: What is the main chemical that causes emeralds to be green?

Question: What is the source of the green color in malachite pigments?

Question: What is the source of amazonite's color?
Passage: Verdigris is made by placing a plate or blade of copper, brass or bronze, slightly warmed, into a vat of fermenting wine, leaving it there for several weeks, and then scraping off and drying the green powder that forms on the metal. The process of making verdigris was described in ancient times by Pliny. It was used by the Romans in the murals of Pompeii, and in Celtic medieval manuscripts as early as the 5th century AD. It produced a blue-green which no other pigment could imitate, but it had drawbacks; it was unstable, it could not resist dampness, it did not mix well with other colors, it could ruin other colors with which it came into contact., and it was toxic. Leonardo da Vinci, in his treatise on painting, warned artists not to use it. It was widely used in miniature paintings in Europe and Persia in the 16th and 17th centuries. Its use largely ended in the late 19th century, when it was replaced by the safer and more stable chrome green. Viridian, also called chrome green, is a pigment made with chromium oxide dihydrate, was patented in 1859. It became popular with painters, since, unlike other synthetic greens, it was stable and not toxic. Vincent van Gogh used it, along with Prussian blue, to create a dark blue sky with a greenish tint in his painting Cafe terrace at night.

Question: What is made by placing a plate of blade of copper, brass, or bronze into vat of fermenting wine for several weeks, then scraping off and drying the green powder?

Question: Who described the process of making verdigris in ancient times?

Question: In what city did the Romans use verdigris in murals?

Question: What would verdigris do to other colors that it came in contact with?

Question: Which famous artist warned other artists not to use verdigris?
Passage: There is no natural source for green food colorings which has been approved by the US Food and Drug Administration. Chlorophyll, the E numbers E140 and E141, is the most common green chemical found in nature, and only allowed in certain medicines and cosmetic materials. Quinoline Yellow (E104) is a commonly used coloring in the United Kingdom but is banned in Australia, Japan, Norway and the United States. Green S (E142) is prohibited in many countries, for it is known to cause hyperactivity, asthma, urticaria, and insomnia.

Question: Which green food coloring is known to cause hyperactivity, asthma, urticaria, and insomnia?

Question: What is a commonly used food coloring in the United Kingdom that is banned in Australia, Japan, Norway, and the United States?

Question: What is the most common green chemical found in nature?
Passage: To create green sparks, fireworks use barium salts, such as barium chlorate, barium nitrate crystals, or barium chloride, also used for green fireplace logs. Copper salts typically burn blue, but cupric chloride (also known as "campfire blue") can also produce green flames. Green pyrotechnic flares can use a mix ratio 75:25 of boron and potassium nitrate. Smoke can be turned green by a mixture: solvent yellow 33, solvent green 3, lactose, magnesium carbonate plus sodium carbonate added to potassium chlorate.

Question: How do fireworks create green sparks?

Question: Which copper salt can produce green glames?

Question: What is the ratio of boron to potassium nitrate in green pyrotechnic flares?
Passage: Green is common in nature, as many plants are green because of a complex chemical known as chlorophyll, which is involved in photosynthesis. Chlorophyll absorbs the long wavelengths of light (red) and short wavelengths of light (blue) much more efficiently than the wavelengths that appear green to the human eye, so light reflected by plants is enriched in green. Chlorophyll absorbs green light poorly because it first arose in organisms living in oceans where purple halobacteria were already exploiting photosynthesis. Their purple color arose because they extracted energy in the green portion of the spectrum using bacteriorhodopsin. The new organisms that then later came to dominate the extraction of light were selected to exploit those portions of the spectrum not used by the halobacteria.

Question: Why are many plants green?

Question: What does chlorophyll do with long (red) and short (blue) wavelengths of light?

Question: Where did chlorophyll first arise?
Passage: Animals typically use the color green as camouflage, blending in with the chlorophyll green of the surrounding environment. Green animals include, especially, amphibians, reptiles, and some fish, birds and insects. Most fish, reptiles, amphibians, and birds appear green because of a reflection of blue light coming through an over-layer of yellow pigment. Perception of color can also be affected by the surrounding environment. For example, broadleaf forests typically have a yellow-green light about them as the trees filter the light. Turacoverdin is one chemical which can cause a green hue in birds, especially. Invertebrates such as insects or mollusks often display green colors because of porphyrin pigments, sometimes caused by diet. This can causes their feces to look green as well. Other chemicals which generally contribute to greenness among organisms are flavins (lychochromes) and hemanovadin. Humans have imitated this by wearing green clothing as a camouflage in military and other fields. Substances that may impart a greenish hue to one's skin include biliverdin, the green pigment in bile, and ceruloplasmin, a protein that carries copper ions in chelation.

Question: How do animals typically use the color green?

Question: Why do most fish, reptiles, amphibians, and birds appear green?

Question: What is a chemical that can cause green hue in birds?

Question: What is a protein that carries copper ions in chelation?

Question: What is the green pigment in bile called?
Passage: There is no green pigment in green eyes; like the color of blue eyes, it is an optical illusion; its appearance is caused by the combination of an amber or light brown pigmentation of the stroma, given by a low or moderate concentration of melanin, with the blue tone imparted by the Rayleigh scattering of the reflected light. Green eyes are most common in Northern and Central Europe. They can also be found in Southern Europe, West Asia, Central Asia, and South Asia. In Iceland, 89% of women and 87% of men have either blue or green eye color. A study of Icelandic and Dutch adults found green eyes to be much more prevalent in women than in men. Among European Americans, green eyes are most common among those of recent Celtic and Germanic ancestry, about 16%.

Question: What is the appearance of green in th eyes attributed to?

Question: Where are green eyes most common?

Question: Among Icelandic and Dutch adults, which sex more commonly has green eyes?
Passage: In Ancient Egypt green was the symbol of regeneration and rebirth, and of the crops made possible by the annual flooding of the Nile. For painting on the walls of tombs or on papyrus, Egyptian artists used finely-ground malachite, mined in the west Sinai and the eastern desert- A paintbox with malachite pigment was found inside the tomb of King Tutankhamun. They also used less expensive green earth pigment, or mixed yellow ochre and blue azurite. To dye fabrics green, they first colored them yellow with dye made from saffron and then soaked them in blue dye from the roots of the woad plant.

Question: Which color was the symbol to regeneration and rebirth in Ancient Egypt?

Question: What did Egyptian artists grind to use to paint on the walls of tombs or on papyrus?

Question: How did Egyptians dye fabrics yellow?