rajpurkar/squad huggingface dataset:
Title: Asphalt

Naturally occurring crude asphalt/bitumen impregnated in sedimentary rock is the prime feed stock for petroleum production from "Oil sands", currently under development in Alberta, Canada. Canada has most of the world's supply of natural asphalt/bitumen, covering 140,000 square kilometres (an area larger than England), giving it the second-largest proven oil reserves in the world. The Athabasca oil sands is the largest asphalt/bitumen deposit in Canada and the only one accessible to surface mining, although recent technological breakthroughs have resulted in deeper deposits becoming producible by in situ methods. Because of oil price increases after 2003, producing bitumen became highly profitable, but as a result of the decline after 2014 it became uneconomic to build new plants again. By 2014, Canadian crude asphalt/bitumen production averaged about 2.3 million barrels (370,000 m3) per day and was projected to rise to 4.4 million barrels (700,000 m3) per day by 2020. The total amount of crude asphalt/bitumen in Alberta which could be extracted is estimated to be about 310 billion barrels (50×10^9 m3), which at a rate of 4,400,000 barrels per day (700,000 m3/d) would last about 200 years.

Question: Where is naturally occurring bitumen in rock being developed as a feed stock for petroleum production?
Answer: Alberta, Canada

Question: How much area does Canada's natural bitumen cover?
Answer: 140,000 square kilometres

Question: Where does Canada rank in world's oil supplies?
Answer: second-largest

Question: What is Canada's only surface bitumen mine?
Answer: Athabasca oil sands

Question: What is the amount of bitumen that can be extracted in Alberta?
Answer: 310 billion barrels
Title: Asphalt

Roofing shingles account for most of the remaining asphalt/bitumen consumption. Other uses include cattle sprays, fence-post treatments, and waterproofing for fabrics. Asphalt/bitumen is used to make Japan black, a lacquer known especially for its use on iron and steel, and it is also used in paint and marker inks by some graffiti supply companies to increase the weather resistance and permanence of the paint or ink, and to make the color much darker.[citation needed] Asphalt/bitumen is also used to seal some alkaline batteries during the manufacturing process.

Question: Besides fuels and paving, what accounts for most of the other use of bitumen?
Answer: Roofing shingles

Question: What lacquer is bitumen used to make for iron and steel production?
Answer: Japan black

Question: Why is Japan black used for outdoor paint?
Answer: weather resistance

Question: Besides weather resistance, why else is Japan black used in paints?
Answer: permanence

Question: What product is bitumen used in manufacturing as a sealant?
Answer: alkaline batteries
Title: Asphalt

The expression "bitumen" originated in the Sanskrit, where we find the words jatu, meaning "pitch," and jatu-krit, meaning "pitch creating", "pitch producing" (referring to coniferous or resinous trees). The Latin equivalent is claimed by some to be originally gwitu-men (pertaining to pitch), and by others, pixtumens (exuding or bubbling pitch), which was subsequently shortened to bitumen, thence passing via French into English. From the same root is derived the Anglo Saxon word cwidu (mastix), the German word Kitt (cement or mastic) and the old Norse word kvada.

Question: What language originated the word bitumen?
Answer: Sanskrit

Question: What does the Sanskrit word translate as?
Answer: pitch creating

Question: To what English word does the Latin translate?
Answer: pitch

Question:  Through what language did bitumen pass to reach English?
Answer: French

Question: To what word does the Anglo Saxon translate?
Answer: mastix
Title: Asphalt

Asphalt/bitumen can sometimes be confused with "coal tar", which is a visually similar black, thermoplastic material produced by the destructive distillation of coal. During the early and mid-20th century when town gas was produced, coal tar was a readily available byproduct and extensively used as the binder for road aggregates. The addition of tar to macadam roads led to the word tarmac, which is now used in common parlance to refer to road-making materials. However, since the 1970s, when natural gas succeeded town gas, asphalt/bitumen has completely overtaken the use of coal tar in these applications. Other examples of this confusion include the La Brea Tar Pits and the Canadian oil sands, both of which actually contain natural bitumen rather than tar. Pitch is another term sometimes used at times to refer to asphalt/bitumen, as in Pitch Lake.

Question: To what similar substance can asphalt be confused?
Answer: coal tar

Question: For what was coal tar used in road paving?
Answer: binder

Question: What is the common word is used to describe the combination of tar and macadam?
Answer: tarmac

Question: What use has pushed out the need to produce roads with coal tar?
Answer: natural gas

Question: Instead of tar, what does the La Brea Tars Pits contain?
Answer: bitumen
Title: Asphalt

One hundred years after the fall of Constantinople in 1453, Pierre Belon described in his work Observations in 1553 that pissasphalto, a mixture of pitch and bitumen, was used in Dubrovnik for tarring of ships from where it was exported to a market place in Venice where it could be bought by anyone. An 1838 edition of Mechanics Magazine cites an early use of asphalt in France. A pamphlet dated 1621, by "a certain Monsieur d'Eyrinys, states that he had discovered the existence (of asphaltum) in large quantities in the vicinity of Neufchatel", and that he proposed to use it in a variety of ways – "principally in the construction of air-proof granaries, and in protecting, by means of the arches, the water-courses in the city of Paris from the intrusion of dirt and filth", which at that time made the water unusable. "He expatiates also on the excellence of this material for forming level and durable terraces" in palaces, "the notion of forming such terraces in the streets not one likely to cross the brain of a Parisian of that generation". But it was generally neglected in France until the revolution of 1830. Then, in the 1830s, there was a surge of interest, and asphalt became widely used "for pavements, flat roofs, and the lining of cisterns, and in England, some use of it had been made of it for similar purposes". Its rise in Europe was "a sudden phenomenon", after natural deposits were found "in France at Osbann (BasRhin), the Parc (l'Ain) and the Puy-de-la-Poix (Puy-de-Dome)", although it could also be made artificially. One of the earliest uses in France was the laying of about 24,000 square yards of Seyssel asphalt at the Place de la Concorde in 1835.

Question: Who described the use of bitumen and pitch to tar ships?
Answer: Pierre Belon

Question: When did Belon make his shipbuilding observations?
Answer: 1553

Question: In what year did a French magazine describe the use of asphalt?
Answer: 1838

Question: After what event in France did  asphalt begin to be used for pavements and assorted other uses?
Answer: revolution of 1830

Question: Where in France in 1835 was asphalt used to lay pavement? 
Answer: Place de la Concorde
Title: Asphalt

In 1838, Claridge obtained patents in Scotland on 27 March, and Ireland on 23 April, and in 1851 extensions were sought for all three patents, by the trustees of a company previously formed by Claridge. This was Claridge's Patent Asphalte Company, formed in 1838 for the purpose of introducing to Britain "Asphalte in its natural state from the mine at Pyrimont Seysell in France", and "laid one of the first asphalt pavements in Whitehall". Trials were made of the pavement in 1838 on the footway in Whitehall, the stable at Knightsbridge Barracks, "and subsequently on the space at the bottom of the steps leading from Waterloo Place to St. James Park". "The formation in 1838 of Claridge's Patent Asphalte Company (with a distinguished list of aristocratic patrons, and Marc and Isambard Brunel as, respectively, a trustee and consulting engineer), gave an enormous impetus to the development of a British asphalt industry". "By the end of 1838, at least two other companies, Robinson's and the Bastenne company, were in production", with asphalt being laid as paving at Brighton, Herne Bay, Canterbury, Kensington, the Strand, and a large floor area in Bunhill-row, while meantime Claridge's Whitehall paving "continue(d) in good order".

Question: In what year did Claridge acquire patents for the use of asphalt?
Answer: 1838

Question: From what French mine did Claridge offer asphalt?
Answer: Pyrimont Seysell

Question: What did Claridge's formation of a company with distinguished backers help inspire? 
Answer: British asphalt industry

Question: In what famous place did Claridge first begin to lay and test the use of asphalt pavement?
Answer: Whitehall

Question: By 1838 how many companies beside Claridge's were offering asphalt?
Answer: two
Title: Asphalt

Canada has the world's largest deposit of natural bitumen in the Athabasca oil sands and Canadian First Nations along the Athabasca River had long used it to waterproof their canoes. In 1719, a Cree Indian named Wa-Pa-Su brought a sample for trade to Henry Kelsey of the Hudson’s Bay Company, who was the first recorded European to see it. However, it wasn't until 1787 that fur trader and explorer Alexander MacKenzie saw the Athabasca oil sands and said, "At about 24 miles from the fork (of the Athabasca and Clearwater Rivers) are some bituminous fountains into which a pole of 20 feet long may be inserted without the least resistance."

Question: For what  did Canadian natives use asphalt as a waterproofing material?
Answer: canoes

Question: Who was the first European trader to see asphalt?
Answer: Henry Kelsey

Question:  For what trading company did Kelsey work?
Answer: Hudson’s Bay Company

Question: Who was the first European to see the Athabascan oil sands?
Answer: Alexander MacKenzie

Question: What country has the largest deposits of bitumen?
Answer: Canada
Title: Asphalt

Mastic asphalt is a type of asphalt which differs from dense graded asphalt (asphalt concrete) in that it has a higher asphalt/bitumen (binder) content, usually around 7–10% of the whole aggregate mix, as opposed to rolled asphalt concrete, which has only around 5% added asphalt/bitumen. This thermoplastic substance is widely used in the building industry for waterproofing flat roofs and tanking underground. Mastic asphalt is heated to a temperature of 210 °C (410 °F) and is spread in layers to form an impervious barrier about 20 millimeters (0.79 inches) thick.

Question: How much additional binder does rolled asphalt concrete have?
Answer: 5%

Question: How is asphalt used in the construction industry?
Answer: waterproofing

Question: What is the percentage of binder in mastic asphalt?
Answer: 7–10%

Question: Prior to spreading, how hot is mastic asphalt heated?
Answer: 210 °C

Question: What is the usual thickness of the mastic spread on roofs?
Answer: 20 millimeters
Title: Asphalt

Because of the difficulty of moving crude bitumen through pipelines, non-upgraded bitumen is usually diluted with natural-gas condensate in a form called dilbit or with synthetic crude oil, called synbit. However, to meet international competition, much non-upgraded bitumen is now sold as a blend of multiple grades of bitumen, conventional crude oil, synthetic crude oil, and condensate in a standardized benchmark product such as Western Canadian Select. This sour, heavy crude oil blend is designed to have uniform refining characteristics to compete with internationally marketed heavy oils such as Mexican Mayan or Arabian Dubai Crude.

Question: What is done to crude bitumen to promote its movement through pipelines?
Answer: diluted

Question: What is the natural gas condensate used to dilute bitumen?
Answer: dilbit

Question: What is the synthetic crude additive to bitumen called?
Answer: synbit

Question: What is the usually sold standard blend of bitumen and oils named?
Answer: Western Canadian Select

Question: In what uniform use was Western Canadian Select meant to excel?
Answer: refining
Title: Asphalt

Asphalt/bitumen is similar to the organic matter in carbonaceous meteorites. However, detailed studies have shown these materials to be distinct. The vast Alberta bitumen resources are believed to have started out as living material from marine plants and animals, mainly algae, that died millions of years ago when an ancient ocean covered Alberta. They were covered by mud, buried deeply over the eons, and gently cooked into oil by geothermal heat at a temperature of 50 to 150 °C (120 to 300 °F). Due to pressure from the rising of the Rocky Mountains in southwestern Alberta, 80 to 55 million years ago, the oil was driven northeast hundreds of kilometres into underground sand deposits left behind by ancient river beds and ocean beaches, thus forming the oil sands.

Question: To what is the organic matter in asphalt similar?
Answer: meteorites

Question: What did the Alberta bitumen mines begin as?
Answer: living material

Question: What kind of living materials formed the basis of bitumen?
Answer: plants and animals

Question: What feature originally covered Alberta?
Answer: ocean

Question: What temperatures did the organic deposits need to form bitumen over the eons?
Answer: 50 to 150 °C
Title: Asphalt

Selenizza is mainly used as an additive in the road construction sector. It is mixed with traditional bitumen to improve both the viscoelastic properties and the resistance to ageing. It may be blended with the hot bitumen in tanks, but its granular form allows it to be fed in the mixer or in the recycling ring of normal asphalt plants. Other typical applications include the production of mastic asphalts for sidewalks, bridges, car-parks and urban roads as well as drilling fluid additives for the oil and gas industry. Selenizza is available in powder or in granular material of various particle sizes and is packaged in big bags or in thermal fusible polyethylene bags.

Question: What component is added to bitumen to improve it?
Answer: Selenizza

Question: To what other paving material is Selenizza added?
Answer: mastic asphalts

Question: What purpose does Selenizza have in the drilling industry?
Answer: fluid additives

Question: In what form is Selenizza offered?
Answer: granular

Question: How is Selenizza shipped?
Answer: bags
Title: Asphalt

In British English, the word 'asphalt' is used to refer to a mixture of mineral aggregate and asphalt/bitumen (also called tarmac in common parlance). When bitumen is mixed with clay it is usually called asphaltum. The earlier word 'asphaltum' is now archaic and not commonly used.[citation needed] In American English, 'asphalt' is equivalent to the British 'bitumen'. However, 'asphalt' is also commonly used as a shortened form of 'asphalt concrete' (therefore equivalent to the British 'asphalt' or 'tarmac'). In Australian English, bitumen is often used as the generic term for road surfaces. In Canadian English, the word bitumen is used to refer to the vast Canadian deposits of extremely heavy crude oil, while asphalt is used for the oil refinery product used to pave roads and manufacture roof shingles and various waterproofing products. Diluted bitumen (diluted with naphtha to make it flow in pipelines) is known as dilbit in the Canadian petroleum industry, while bitumen "upgraded" to synthetic crude oil is known as syncrude and syncrude blended with bitumen as synbit. Bitumen is still the preferred geological term for naturally occurring deposits of the solid or semi-solid form of petroleum. Bituminous rock is a form of sandstone impregnated with bitumen. The tar sands of Alberta, Canada are a similar material.

Question: To what type of aggregate did asphalt used to refer?
Answer: mixture

Question: What is the mixture of bitumen and minerals called?
Answer: tarmac

Question: When mixed wit clay, what is bitumen called?
Answer: asphaltum

Question: With what word in America, is bitumen used interchangeably?
Answer: 'asphalt

Question: What is the geological term for asphalt?
Answer: Bitumen
Title: Asphalt

Bitumen was the nemesis of many artists during the 19th century. Although widely used for a time, it ultimately proved unstable for use in oil painting, especially when mixed with the most common diluents, such as linseed oil, varnish and turpentine. Unless thoroughly diluted, bitumen never fully solidifies and will in time corrupt the other pigments with which it comes into contact. The use of bitumen as a glaze to set in shadow or mixed with other colors to render a darker tone resulted in the eventual deterioration of many paintings, for instance those of Delacroix. Perhaps the most famous example of the destructiveness of bitumen is Théodore Géricault's Raft of the Medusa (1818–1819), where his use of bitumen caused the brilliant colors to degenerate into dark greens and blacks and the paint and canvas to buckle.

Question: What pigment did 19th century artists use that was deemed unfavorably?
Answer: Bitumen

Question: What did bitumen when used as a paint not do correctly?
Answer: solidifies

Question: What did even limited use of bitumen do to damage paintings?
Answer: deterioration

Question: What artist's work i considered to be an example of the damaging effects of bitumen?
Answer: Théodore Géricault's

Question: What major problem did bitumen as a pigment show itself to be?  
Answer: unstable
Title: Asphalt

In 1914, Claridge's Company entered into a joint venture to produce tar-bound macadam, with materials manufactured through a subsidiary company called Clarmac Roads Ltd. Two products resulted, namely Clarmac, and Clarphalte, with the former being manufactured by Clarmac Roads and the latter by Claridge's Patent Asphalte Co., although Clarmac was more widely used.[note 1] However, the First World War impacted financially on the Clarmac Company, which entered into liquidation in 1915. The failure of Clarmac Roads Ltd had a flow-on effect to Claridge's Company, which was itself compulsorily wound up, ceasing operations in 1917, having invested a substantial amount of funds into the new venture, both at the outset, and in a subsequent attempt to save the Clarmac Company.

Question: Which of Claridge's two tar macadams was the more successful?
Answer: Clarmac

Question: When did Claridge's company liquidate?
Answer: 1915

Question: What world event caused the end of Claridge's company?
Answer: First World War

Question: What was the subsidiary company that lead Claridge into ruin?
Answer: Clarmac Roads Ltd

Question: What kind of money did Claridge  invest in attempting  to save his companies?
Answer: substantial amount
Title: Asphalt

The largest use of asphalt/bitumen is for making asphalt concrete for road surfaces and accounts for approximately 85% of the asphalt consumed in the United States. Asphalt concrete pavement mixes are typically composed of 5% asphalt/bitumen cement and 95% aggregates (stone, sand, and gravel). Due to its highly viscous nature, asphalt/bitumen cement must be heated so it can be mixed with the aggregates at the asphalt mixing facility. The temperature required varies depending upon characteristics of the asphalt/bitumen and the aggregates, but warm-mix asphalt technologies allow producers to reduce the temperature required. There are about 4,000 asphalt concrete mixing plants in the U.S., and a similar number in Europe.

Question: What is the biggest use of asphalt?
Answer: road surfaces

Question: How much is the percentage of use of bitumen for roads is there in the US?
Answer: 85%

Question: How much bitumen is in usual concrete mixtures?
Answer: 5%

Question: What percentage of concrete mixes is aggregates?
Answer: 95%

Question: How many concrete plants are in the US?
Answer: 4,000
Title: Asphalt

Synthetic crude oil, also known as syncrude, is the output from a bitumen upgrader facility used in connection with oil sand production in Canada. Bituminous sands are mined using enormous (100 ton capacity) power shovels and loaded into even larger (400 ton capacity) dump trucks for movement to an upgrading facility. The process used to extract the bitumen from the sand is a hot water process originally developed by Dr. Karl Clark of the University of Alberta during the 1920s. After extraction from the sand, the bitumen is fed into a bitumen upgrader which converts it into a light crude oil equivalent. This synthetic substance is fluid enough to be transferred through conventional oil pipelines and can be fed into conventional oil refineries without any further treatment. By 2015 Canadian bitumen upgraders were producing over 1 million barrels (160×10^3 m3) per day of synthetic crude oil, of which 75% was exported to oil refineries in the United States.

Question: What is synthetic crude oil usually called?
Answer: syncrude

Question: Where is the mined bitumen taken for refining?
Answer: upgrading facility

Question: Who invented the process for removing bitumen from sands?
Answer: Dr. Karl Clark

Question: Un what decade did Clark develop the hot water removal process?
Answer: 1920s

Question: How many barrels of crude were upgraders making per day by 2015?
Answer: 1 million barrels
Title: Asphalt

About 40,000,000 tons were produced in 1984[needs update]. It is obtained as the "heavy" (i.e., difficult to distill) fraction. Material with a boiling point greater than around 500 °C is considered asphalt. Vacuum distillation separates it from the other components in crude oil (such as naphtha, gasoline and diesel). The resulting material is typically further treated to extract small but valuable amounts of lubricants and to adjust the properties of the material to suit applications. In a de-asphalting unit, the crude asphalt is treated with either propane or butane in a supercritical phase to extract the lighter molecules, which are then separated. Further processing is possible by "blowing" the product: namely reacting it with oxygen. This step makes the product harder and more viscous.

Question: How many tons of bitumen ere produced in 1984?
Answer: 40,000,000

Question: What boiling point is considered to be the for asphalt?
Answer: 500 °C

Question: What method is used to divide asphalt from other materials?
Answer: Vacuum distillation

Question: What is the process used to harden the asphalt?
Answer: blowing

Question: In processing asphalt, what is the unit used to separate it?
Answer: de-asphalting
Title: Asphalt

Selenizza is a naturally occurring solid hydrocarbon bitumen found in the native asphalt deposit of Selenice, in Albania, the only European asphalt mine still in use. The rock asphalt is found in the form of veins, filling cracks in a more or less horizontal direction. The bitumen content varies from 83% to 92% (soluble in carbon disulphide), with a penetration value near to zero and a softening point (ring & ball) around 120 °C. The insoluble matter, consisting mainly of silica ore, ranges from 8% to 17%.

Question: To what location is Selenizza bitumen native?
Answer: Selenice, in Albania

Question: What is it about the mine that is unusual?
Answer: still in use

Question: In what way is Selenizza bitumen geologically different than bitumen found in sands? 
Answer: rock asphalt

Question: What is the variance in bitumen content rock asphalt?
Answer: 83% to 92%

Question: How is the rock asphalt mainly found?
Answer: veins