rajpurkar/squad huggingface dataset:
Title: Appalachian_Mountains

The term Appalachian refers to several different regions associated with the mountain range. Most broadly, it refers to the entire mountain range with its surrounding hills and the dissected plateau region. The term is often used more restrictively to refer to regions in the central and southern Appalachian Mountains, usually including areas in the states of Kentucky, Tennessee, Virginia, Maryland, West Virginia, and North Carolina, as well as sometimes extending as far south as northern Alabama, Georgia and western South Carolina, and as far north as Pennsylvania, southern Ohio and parts of southern upstate New York.

Question: What does the term Appalachian refer to?
Answer: several different regions associated with the mountain range

Question: What states comprise of the southern Appalachian mountains?
Answer: Kentucky, Tennessee, Virginia, Maryland, West Virginia, and North Carolina
Title: Appalachian_Mountains

While exploring inland along the northern coast of Florida in 1528, the members of the Narváez expedition, including Álvar Núñez Cabeza de Vaca, found a Native American village near present-day Tallahassee, Florida whose name they transcribed as Apalchen or Apalachen [a.paˈla.tʃɛn]. The name was soon altered by the Spanish to Apalachee and used as a name for the tribe and region spreading well inland to the north. Pánfilo de Narváez's expedition first entered Apalachee territory on June 15, 1528, and applied the name. Now spelled "Appalachian," it is the fourth-oldest surviving European place-name in the US.

Question: What area did the Narvaez expedition explore?
Answer: northern coast of Florida

Question: When did the Narvaez expedition explore Florida?
Answer: 1528

Question: What did they transcribe Florida's name as? 
Answer: Apalchen

Question: What was the name eventually used for?
Answer: as a name for the tribe and region spreading well inland to the north
Title: Appalachian_Mountains

In addition to the true folded mountains, known as the ridge and valley province, the area of dissected plateau to the north and west of the mountains is usually grouped with the Appalachians. This includes the Catskill Mountains of southeastern New York, the Poconos in Pennsylvania, and the Allegheny Plateau of southwestern New York, western Pennsylvania, eastern Ohio and northern West Virginia. This same plateau is known as the Cumberland Plateau in southern West Virginia, eastern Kentucky, western Virginia, eastern Tennessee, and northern Alabama.

Question: What area is usually grouped with the Appalachians? 
Answer: dissected plateau to the north and west of the mountains

Question: What mountains does that region include?
Answer: Catskill Mountains

Question: What is the plateau known as in West Virginia?
Answer: Cumberland Plateau
Title: Appalachian_Mountains

The Appalachian belt includes, with the ranges enumerated above, the plateaus sloping southward to the Atlantic Ocean in New England, and south-eastward to the border of the coastal plain through the central and southern Atlantic states; and on the north-west, the Allegheny and Cumberland plateaus declining toward the Great Lakes and the interior plains. A remarkable feature of the belt is the longitudinal chain of broad valleys, including The Great Appalachian Valley, which in the southerly sections divides the mountain system into two unequal portions, but in the northernmost lies west of all the ranges possessing typical Appalachian features, and separates them from the Adirondack group. The mountain system has no axis of dominating altitudes, but in every portion the summits rise to rather uniform heights, and, especially in the central section, the various ridges and intermontane valleys have the same trend as the system itself. None of the summits reaches the region of perpetual snow.

Question: What does the Great Appalachian Valley do?
Answer: divides the mountain system into two unequal portions

Question: What is common among all the mountains in the range?
Answer: has no axis of dominating altitudes, but in every portion the summits rise to rather uniform heights

Question: What is the climate like on the summits?
Answer: None of the summits reaches the region of perpetual snow.
Title: Appalachian_Mountains

Mountains of the Long Range in Newfoundland reach heights of nearly 3,000 ft (900 m). In the Chic-Choc and Notre Dame mountain ranges in Quebec, the higher summits rise to about 4,000 ft (1,200 m) elevation. Isolated peaks and small ranges in Nova Scotia and New Brunswick vary from 1,000 to 2,700 ft (300 to 800 m). In Maine several peaks exceed 4,000 ft (1,200 m), including Mount Katahdin at 5,267 feet (1,605 m). In New Hampshire, many summits rise above 5,000 ft (1,500 m), including Mount Washington in the White Mountains at 6,288 ft (1,917 m), Adams at 5,771 ft (1,759 m), Jefferson at 5,712 ft (1,741 m), Monroe at 5,380 ft (1,640 m), Madison at 5,367 ft (1,636 m), Lafayette at 5,249 feet (1,600 m), and Lincoln at 5,089 ft (1,551 m). In the Green Mountains the highest point, Mt. Mansfield, is 4,393 ft (1,339 m) in elevation; others include Killington Peak at 4,226 ft (1,288 m), Camel's Hump at 4,083 ft (1,244 m), Mt. Abraham at 4,006 ft (1,221 m), and a number of other heights exceeding 3,000 ft (900 m).

Question: How tall are the mountains in Newfoundland?
Answer: 3,000 ft

Question: How tall are the mountains in Nova Scotia?
Answer: vary from 1,000 to 2,700 ft

Question: How tall are the mountains in Maine?
Answer: exceed 4,000 ft

Question: How tall are the mountains in New Hampshire?
Answer: many summits rise above 5,000 ft
Title: Appalachian_Mountains

In Pennsylvania, there are over sixty summits that rise over 2,500 ft (800 m); the summits of Mount Davis and Blue Knob rise over 3,000 ft (900 m). In Maryland, Eagle Rock and Dans Mountain are conspicuous points reaching 3,162 ft (964 m) and 2,882 ft (878 m) respectively. On the same side of the Great Valley, south of the Potomac, are the Pinnacle 3,007 feet (917 m) and Pidgeon Roost 3,400 ft (1,000 m). In West Virginia, more than 150 peaks rise above 4,000 ft (1,200 m), including Spruce Knob 4,863 ft (1,482 m), the highest point in the Allegheny Mountains. A number of other points in the state rise above 4,800 ft (1,500 m). Snowshoe Mountain at Thorny Flat 4,848 ft (1,478 m) and Bald Knob 4,842 ft (1,476 m) are among the more notable peaks in West Virginia.

Question: How many summits in PA are over 2,500 ft? 
Answer: over sixty summits

Question: How tall are the summits of Mount Davis and Blue Knob?
Answer: over 3,000 ft

Question: How tall are Eagle Rock and Dans Mountain?
Answer: 3,162 ft (964 m) and 2,882 ft

Question: How tall is the Pinnacle?
Answer: 3,007 feet

Question: How many peaks are over 4,000 feet in WV?
Answer: more than 150 peaks
Title: Appalachian_Mountains

The Blue Ridge Mountains, rising in southern Pennsylvania and there known as South Mountain, attain elevations of about 2,000 ft (600 m) in that state. South Mountain achieves its highest point just below the Mason-Dixon line in Maryland at Quirauk Mountain 2,145 ft (654 m) and then diminishes in height southward to the Potomac River. Once in Virginia the Blue Ridge again reaches 2,000 ft (600 m) and higher. In the Virginia Blue Ridge, the following are some of the highest peaks north of the Roanoke River: Stony Man 4,031 ft (1,229 m), Hawksbill Mountain 4,066 ft (1,239 m), Apple Orchard Mountain 4,225 ft (1,288 m) and Peaks of Otter 4,001 and 3,875 ft (1,220 and 1,181 m). South of the Roanoke River, along the Blue Ridge, are Virginia's highest peaks including Whitetop Mountain 5,520 ft (1,680 m) and Mount Rogers 5,729 ft (1,746 m), the highest point in the Commonwealth.

Question: Where do the Blue Ridge Mountains begin?
Answer: southern Pennsylvania

Question: What are the typical elevations of the Blue Ridge Mountains?
Answer: 2,000 ft

Question: How tall is Quirauk Mountain?
Answer: 2,145 ft

Question: How tall are the Blue Ridge Mountains in Virginia?
Answer: 2,000 ft

Question: What is the tallest Appalachian mountain in Virginia?
Answer: Mount Rogers
Title: Appalachian_Mountains

Before the French and Indian War, the Appalachian Mountains laid on the indeterminate boundary between Britain's colonies along the Atlantic and French areas centered in the Mississippi basin. After the French and Indian War, the Proclamation of 1763 restricted settlement for Great Britain's thirteen original colonies in North America to east of the summit line of the mountains (except in the northern regions where the Great Lakes formed the boundary). Although the line was adjusted several times to take frontier settlements into account and was impossible to enforce as law, it was strongly resented by backcountry settlers throughout the Appalachians. The Proclamation Line can be seen as one of the grievances which led to the American Revolutionary War. Many frontier settlers held that the defeat of the French opened the land west of the mountains to English settlement, only to find settlement barred by the British King's proclamation. The backcountry settlers who fought in the Illinois campaign of George Rogers Clark were motivated to secure their settlement of Kentucky.

Question: Where did the mountains lay before the French and Indian War?
Answer: on the indeterminate boundary between Britain's colonies along the Atlantic and French areas centered in the Mississippi basin

Question: What happened after the French and Indian War?
Answer: the Proclamation of 1763 restricted settlement for Great Britain's thirteen original colonies in North America to east of the summit line of the mountains

Question: What was the general opinion of the law?
Answer: it was strongly resented by backcountry settlers throughout the Appalachians

Question: What did the law likely lead to?
Answer: the American Revolutionary War

Question: What did the backcountry settlers want to secure?
Answer: their settlement of Kentucky
Title: Appalachian_Mountains

In eastern Pennsylvania the Great Appalachian Valley, or Great Valley, was accessible by reason of a broad gateway between the end of South Mountain and the Highlands, and many Germans and Moravians settled here between the Susquehanna and Delaware Rivers forming the Pennsylvania Dutch community, some of whom even now speak a unique American dialect of German known as the "Pennsylvania German language" or "Pennsylvania Dutch." These latecomers to the New World were forced to the frontier to find cheap land. With their followers of both German, English and Scots-Irish origin, they worked their way southward and soon occupied all of the Shenandoah Valley, ceded by the Iroquois, and the upper reaches of the Great Valley tributaries of the Tennessee River, ceded by the Cherokee.

Question: Where did a lot of Germans settle? 
Answer: between the Susquehanna and Delaware Rivers

Question: What dialect was created because of this?
Answer: Pennsylvania German language

Question: Where did these Germans eventually occupy?
Answer: all of the Shenandoah Valley
Title: Appalachian_Mountains

Characteristic birds of the forest are wild turkey (Meleagris gallopavo silvestris), ruffed grouse (Bonasa umbellus), mourning dove (Zenaida macroura), common raven (Corvus corax), wood duck (Aix sponsa), great horned owl (Bubo virginianus), barred owl (Strix varia), screech owl (Megascops asio), red-tailed hawk (Buteo jamaicensis), red-shouldered hawk (Buteo lineatus), and northern goshawk (Accipiter gentilis), as well as a great variety of "songbirds" (Passeriformes), like the warblers in particular.

Question: What is one typical bird found in the range?
Answer: wild turkey
Title: Appalachian_Mountains

Animals that characterize the Appalachian forests include five species of tree squirrels. The most commonly seen is the low to moderate elevation eastern gray squirrel (Sciurus carolinensis). Occupying similar habitat is the slightly larger fox squirrel (Sciurus niger) and the much smaller southern flying squirrel (Glaucomys volans). More characteristic of cooler northern and high elevation habitat is the red squirrel (Tamiasciurus hudsonicus), whereas the Appalachian northern flying squirrel (Glaucomys sabrinus fuscus), which closely resembles the southern flying squirrel, is confined to northern hardwood and spruce-fir forests.

Question: How many species of tree squirrel are commonly found in the range?
Answer: five species

Question: What is the most commonly seen species?
Answer: gray squirrel

Question: What does the squirrel share its habitat with?
Answer: larger fox squirrel

Question: What is found more in the northern portions?
Answer: red squirrel

Question: Which species is commonly found more in spruce-fir forests?
Answer: Appalachian northern flying squirrel
Title: Appalachian_Mountains

Dryer and rockier uplands and ridges are occupied by oak-chestnut type forests dominated by a variety of oaks (Quercus spp.), hickories (Carya spp.) and, in the past, by the American chestnut (Castanea dentata). The American chestnut was virtually eliminated as a canopy species by the introduced fungal chestnut blight (Cryphonectaria parasitica), but lives on as sapling-sized sprouts that originate from roots, which are not killed by the fungus. In present-day forest canopies chestnut has been largely replaced by oaks.

Question: What trees are typically found in the dryer portions?
Answer: oak

Question: What species of tree was pretty much eliminated?
Answer: The American chestnut

Question: What does the tree live on?
Answer: sapling-sized sprouts

Question: What trees replaced chestnut trees?
Answer: oaks
Title: Appalachian_Mountains

The oak forests of the southern and central Appalachians consist largely of black, northern red, white, chestnut and scarlet oaks (Quercus velutina, Q. rubra, Q. alba, Q. prinus and Q. coccinea) and hickories, such as the pignut (Carya glabra) in particular. The richest forests, which grade into mesic types, usually in coves and on gentle slopes, have dominantly white and northern red oaks, while the driest sites are dominated by chestnut oak, or sometimes by scarlet or northern red oaks. In the northern Appalachians the oaks, except for white and northern red, drop out, while the latter extends farthest north.

Question: What kind of oaks are in the central and southern portions?
Answer: black, northern red, white, chestnut and scarlet oaks

Question: What other tree is common there?
Answer: hickories

Question: What trees are located in drier portions?
Answer: chestnut oak
Title: Energy

In physics, energy is a property of objects which can be transferred to other objects or converted into different forms. The "ability of a system to perform work" is a common description, but it is difficult to give one single comprehensive definition of energy because of its many forms. For instance, in SI units, energy is measured in joules, and one joule is defined "mechanically", being the energy transferred to an object by the mechanical work of moving it a distance of 1 metre against a force of 1 newton.[note 1] However, there are many other definitions of energy, depending on the context, such as thermal energy, radiant energy, electromagnetic, nuclear, etc., where definitions are derived that are the most convenient.

Question: What is a property of objects which can be transferred to other objects or converted into different forms?
Answer: energy

Question: In SI units, energy is measured in what measurement?
Answer: joules

Question: Mechanically, one joule is defined as what?
Answer: the energy transferred to an object by the mechanical work of moving it a distance of 1 metre against a force of 1 newton
Title: Energy

Common energy forms include the kinetic energy of a moving object, the potential energy stored by an object's position in a force field (gravitational, electric or magnetic), the elastic energy stored by stretching solid objects, the chemical energy released when a fuel burns, the radiant energy carried by light, and the thermal energy due to an object's temperature. All of the many forms of energy are convertible to other kinds of energy. In Newtonian physics, there is a universal law of conservation of energy which says that energy can be neither created nor be destroyed; however, it can change from one form to another.

Question: Common energy forms include what?
Answer: kinetic energy of a moving object

Question: In Newtonian physics, there is a universal law that says energy can be neither created nor what?
Answer: destroyed

Question: What law states, in part, that energy can change from one form to another?
Answer: Newtonian physics
Title: Energy

For "closed systems" with no external source or sink of energy, the first law of thermodynamics states that a system's energy is constant unless energy is transferred in or out by mechanical work or heat, and that no energy is lost in transfer. This means that it is impossible to create or destroy energy. While heat can always be fully converted into work in a reversible isothermal expansion of an ideal gas, for cyclic processes of practical interest in heat engines the second law of thermodynamics states that the system doing work always loses some energy as waste heat. This creates a limit to the amount of heat energy that can do work in a cyclic process, a limit called the available energy. Mechanical and other forms of energy can be transformed in the other direction into thermal energy without such limitations. The total energy of a system can be calculated by adding up all forms of energy in the system.

Question: How can the total energy of a system be calculated?
Answer: by adding up all forms of energy in the system

Question: The limit to the amount of heat energy that can do work in a cyclic process is known as what?
Answer: available energy

Question: What can be fully converted into work in a reversible isothermal expansion of an ideal gas?
Answer: heat

Question: What states that the system doing work always loses some energy as waste heat?
Answer: second law of thermodynamics
Title: Energy

Examples of energy transformation include generating electric energy from heat energy via a steam turbine, or lifting an object against gravity using electrical energy driving a crane motor. Lifting against gravity performs mechanical work on the object and stores gravitational potential energy in the object. If the object falls to the ground, gravity does mechanical work on the object which transforms the potential energy in the gravitational field to the kinetic energy released as heat on impact with the ground. Our Sun transforms nuclear potential energy to other forms of energy; its total mass does not decrease due to that in itself (since it still contains the same total energy even if in different forms), but its mass does decrease when the energy escapes out to its surroundings, largely as radiant energy.

Question: Give one example of energy transformation.
Answer: generating electric energy from heat energy via a steam turbine

Question: What transforms nuclear potential energy to other forms of energy?
Answer: Sun

Question: What is another example of energy transformation?
Answer: lifting an object against gravity using electrical energy driving a crane motor
Title: Energy

The total energy of a system can be subdivided and classified in various ways. For example, classical mechanics distinguishes between kinetic energy, which is determined by an object's movement through space, and potential energy, which is a function of the position of an object within a field. It may also be convenient to distinguish gravitational energy, thermal energy, several types of nuclear energy (which utilize potentials from the nuclear force and the weak force), electric energy (from the electric field), and magnetic energy (from the magnetic field), among others. Many of these classifications overlap; for instance, thermal energy usually consists partly of kinetic and partly of potential energy.

Question: What is determined by an object's movement through space?
Answer: kinetic energy

Question: What usually consists partly of kinetic and partly of potential energy?
Answer: thermal energy

Question: What is a function of the position of an object within a field?
Answer: potential energy
Title: Energy

Some types of energy are a varying mix of both potential and kinetic energy. An example is mechanical energy which is the sum of (usually macroscopic) kinetic and potential energy in a system. Elastic energy in materials is also dependent upon electrical potential energy (among atoms and molecules), as is chemical energy, which is stored and released from a reservoir of electrical potential energy between electrons, and the molecules or atomic nuclei that attract them.[need quotation to verify].The list is also not necessarily complete. Whenever physical scientists discover that a certain phenomenon appears to violate the law of energy conservation, new forms are typically added that account for the discrepancy.

Question: What is dependent upon electrical potential energy?
Answer: Elastic energy in materials

Question: Where is chemical energy stored and released?
Answer: from a reservoir of electrical potential energy between electrons

Question: Some types of energy are a varying mix of potential and what other kind of energy?
Answer: kinetic
Title: Energy

In the late 17th century, Gottfried Leibniz proposed the idea of the Latin: vis viva, or living force, which defined as the product of the mass of an object and its velocity squared; he believed that total vis viva was conserved. To account for slowing due to friction, Leibniz theorized that thermal energy consisted of the random motion of the constituent parts of matter, a view shared by Isaac Newton, although it would be more than a century until this was generally accepted. The modern analog of this property, kinetic energy, differs from vis viva only by a factor of two.

Question: What is a term for living force?
Answer: vis viva

Question: What is defined as the product of mass of an object and its velocity squared?
Answer: vis viva

Question: Who proposed the idea of the Latin: vis viva?
Answer: Gottfried Leibniz

Question: In what century did Leibniz propose the idea of Latin: vis viva?
Answer: late 17th century

Question: Who shared Leibniz's view that thermal energy consisted of random motion of the constituent parts of matter?
Answer: Isaac Newton
Title: Energy

In 1807, Thomas Young was possibly the first to use the term "energy" instead of vis viva, in its modern sense. Gustave-Gaspard Coriolis described "kinetic energy" in 1829 in its modern sense, and in 1853, William Rankine coined the term "potential energy". The law of conservation of energy was also first postulated in the early 19th century, and applies to any isolated system. It was argued for some years whether heat was a physical substance, dubbed the caloric, or merely a physical quantity, such as momentum. In 1845 James Prescott Joule discovered the link between mechanical work and the generation of heat.

Question: Who was possibly the first to use the term "energy" instead of vis viva?
Answer: Thomas Young

Question: When did Thomas Young use the term "energy" instead of vis viva?
Answer: 1807

Question: Who coined the term "potential energy?"
Answer: William Rankine

Question: Who discovered the link between mechanical work and the generation of heat?
Answer: James Prescott Joule

Question: When was the law of conservation of energy first postulated?
Answer: 19th century