Problem: Alaska:

Alaska's economy depends heavily on increasingly expensive diesel fuel for heating, transportation, electric power and light. Though wind and hydroelectric power are abundant and underdeveloped, proposals for statewide energy systems (e.g. with special low-cost electric interties) were judged uneconomical (at the time of the report, 2001) due to low (less than 50¢/gal) fuel prices, long distances and low population. The cost of a gallon of gas in urban Alaska today is usually 30–60¢ higher than the national average; prices in rural areas are generally significantly higher but vary widely depending on transportation costs, seasonal usage peaks, nearby petroleum development infrastructure and many other factors.

Why were alternative energy sources judged uneconomical in 2001?
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A: low (less than 50¢/gal) fuel prices, long distances and low population


Problem: A small, landlocked kingdom, Swaziland is bordered in the North, West and South by the Republic of South Africa and by Mozambique in the East. Swaziland has a land area of 17,364 km2. Swaziland has four separate geographical regions. These run from North to South and are determined by altitude. Swaziland is located at approximately 26°30'S, 31°30'E. Swaziland has a wide variety of landscapes, from the mountains along the Mozambican border to savannas in the east and rain forest in the northwest. Several rivers flow through the country, such as the Great Usutu River.
How many geographical regions are within Swaziland?
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Answer: four


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Although the Adventist churches hold much in common, their theologies differ on whether the intermediate state is unconscious sleep or consciousness, whether the ultimate punishment of the wicked is annihilation or eternal torment, the nature of immortality, whether or not the wicked are resurrected after the millennium, and whether the sanctuary of Daniel 8 refers to the one in heaven or one on earth. The movement has encouraged the examination of the whole Bible, leading Seventh-day Adventists and some smaller Adventist groups to observe the Sabbath. The General Conference of Seventh-day Adventists has compiled that church's core beliefs in the 28 Fundamental Beliefs (1980 and 2005), which use Biblical references as justification.
What is used for justification of the 28 Fundamental Beliefs?
A: Biblical references


Context and question: Academics noted that with her videos, Madonna was subtly reversing the usual role of male as the dominant sex. This symbolism and imagery was probably the most prevalent in the music video for "Like a Prayer". The video included scenes of an African-American church choir, Madonna being attracted to a statue of a black saint, and singing in front of burning crosses. This mix of the sacred and the profane upset the Vatican and resulted in the Pepsi commercial withdrawal. In 2003, MTV named her "The Greatest Music Video Star Ever" and said that "Madonna's innovation, creativity and contribution to the music video art form is what won her the award."
Who named Madonna the Greatest Music Video star ever?
Answer: MTV


Question: HDTV technology was introduced in the United States in the late 1980s and made official in 1993 by the Digital HDTV Grand Alliance, a group of television, electronic equipment, communications companies consisting of AT&T Bell Labs, General Instrument, Philips, Sarnoff, Thomson, Zenith and the Massachusetts Institute of Technology. Field testing of HDTV at 199 sites in the United States was completed August 14, 1994. The first public HDTV broadcast in the United States occurred on July 23, 1996 when the Raleigh, North Carolina television station WRAL-HD began broadcasting from the existing tower of WRAL-TV southeast of Raleigh, winning a race to be first with the HD Model Station in Washington, D.C., which began broadcasting July 31, 1996 with the callsign WHD-TV, based out of the facilities of NBC owned and operated station WRC-TV. The American Advanced Television Systems Committee (ATSC) HDTV system had its public launch on October 29, 1998, during the live coverage of astronaut John Glenn's return mission to space on board the Space Shuttle Discovery. The signal was transmitted coast-to-coast, and was seen by the public in science centers, and other public theaters specially equipped to receive and display the broadcast.
Is there an answer to this question: When did the first public HDTV broadcast happen in the US?

Answer: July 23, 1996


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The Roman Republic (Latin: Res publica Romana; Classical Latin: [ˈreːs ˈpuːb.lɪ.ka roːˈmaː.na]) was the period of ancient Roman civilization beginning with the overthrow of the Roman Kingdom, traditionally dated to 509 BC, and ending in 27 BC with the establishment of the Roman Empire. It was during this period that Rome's control expanded from the city's immediate surroundings to hegemony over the entire Mediterranean world. During the first two centuries of its existence, the Roman Republic expanded through a combination of conquest and alliance, from central Italy to the entire Italian peninsula. By the following century, it included North Africa, Spain, and what is now southern France. Two centuries after that, towards the end of the 1st century BC, it included the rest of modern France, Greece, and much of the eastern Mediterranean. By this time, internal tensions led to a series of civil wars, culminating with the assassination of Julius Caesar, which led to the transition from republic to empire. The exact date of transition can be a matter of interpretation. Historians have variously proposed Julius Caesar's crossing of the Rubicon River in 49 BC, Caesar's appointment as dictator for life in 44 BC, and the defeat of Mark Antony and Cleopatra at the Battle of Actium in 31 BC. However, most use the same date as did the ancient Romans themselves, the Roman Senate's grant of extraordinary powers to Octavian and his adopting the title Augustus in 27 BC, as the defining event ending the Republic.
What marked the beginning of the Roman Republic?
A:
the overthrow of the Roman Kingdom