Problem: United States Air Force:

In the US Air Force, the distinction between bombers, fighters that are actually fighter-bombers, and attack aircraft has become blurred. Many attack aircraft, even ones that look like fighters, are optimized to drop bombs, with very little ability to engage in aerial combat. Many fighter aircraft, such as the F-16, are often used as 'bomb trucks', despite being designed for aerial combat. Perhaps the one meaningful distinction at present is the question of range: a bomber is generally a long-range aircraft capable of striking targets deep within enemy territory, whereas fighter bombers and attack aircraft are limited to 'theater' missions in and around the immediate area of battlefield combat. Even that distinction is muddied by the availability of aerial refueling, which greatly increases the potential radius of combat operations. The US, Russia, and the People's Republic of China operate strategic bombers.

What increases the radius of combat missions by the US Air Force?
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A: aerial refueling


Problem: The Alaska State Troopers are Alaska's statewide police force. They have a long and storied history, but were not an official organization until 1941. Before the force was officially organized, law enforcement in Alaska was handled by various federal agencies. Larger towns usually have their own local police and some villages rely on "Public Safety Officers" who have police training but do not carry firearms. In much of the state, the troopers serve as the only police force available. In addition to enforcing traffic and criminal law, wildlife Troopers enforce hunting and fishing regulations. Due to the varied terrain and wide scope of the Troopers' duties, they employ a wide variety of land, air, and water patrol vehicles.
What type of vehicles do Troopers operate?
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Answer: a wide variety of land, air, and water patrol vehicles


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Outside of these genealogies, comics theorists and historians have seen precedents for comics in the Lascaux cave paintings in France (some of which appear to be chronological sequences of images), Egyptian hieroglyphs, Trajan's Column in Rome, the 11th-century Norman Bayeux Tapestry, the 1370 bois Protat woodcut, the 15th-century Ars moriendi and block books, Michelangelo's The Last Judgment in the Sistine Chapel, and William Hogarth's 17th-century sequential engravings, amongst others.[b]
In Egypt, historians consider what to be a precedent for comics?
A: hieroglyphs


Context and question: The Angel, Islington was formerly a coaching inn, the first on the route northwards out of London, where Thomas Paine is believed to have written much of The Rights of Man. It was mentioned by Charles Dickens, became a Lyons Corner House, and is now a Co-operative Bank.
At what pub did Thomas Paine write The Rights of Man?
Answer: The Angel


Question: The basis for classical economics forms Adam Smith's An Inquiry into the Nature and Causes of the Wealth of Nations, published in 1776. Smith criticized mercantilism, advocating a system of free trade with division of labour. He postulated an "invisible hand" that regulated economic systems made up of actors guided only by self-interest. Karl Marx developed an alternative economic theory, called Marxian economics. Marxian economics is based on the labor theory of value and assumes the value of good to be based on the amount of labor required to produce it. Under this assumption, capitalism was based on employers not paying the full value of workers labor to create profit. The Austrian school responded to Marxian economics by viewing entrepreneurship as driving force of economic development. This replaced the labor theory of value by a system of supply and demand.
Is there an answer to this question: Who is Marxian economics named after?

Answer: Karl Marx


Problem: FA Cup:

The final has been played at the rebuilt Wembley Stadium since it opened, in 2007. The rebuilding process meant that between 2001 and 2006 they were hosted at the Millennium Stadium in Cardiff in Wales. Prior to rebuilding, the final was hosted by the original Wembley Stadium since it opened in 1923 (being originally named the Empire Stadium). One exception to this 78 year series of Empire Stadium finals (including five replays) was the 1970 replay between Leeds and Chelsea, held at Old Trafford in Manchester.

When did this stadium open? 
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A:
it opened, in 2007.