Problem: Antarctica:

Antarctica is the coldest of Earth's continents. The coldest natural temperature ever recorded on Earth was −89.2 °C (−128.6 °F) at the Soviet (now Russian) Vostok Station in Antarctica on 21 July 1983. For comparison, this is 10.7 °C (20 °F) colder than subliming dry ice at one atmosphere of partial pressure, but since CO2 only makes up 0.039% of air, temperatures of less than −150 °C (−238 °F) would be needed to produce dry ice snow in Antarctica. Antarctica is a frozen desert with little precipitation; the South Pole itself receives less than 10 cm (4 in) per year, on average. Temperatures reach a minimum of between −80 °C (−112 °F) and −89.2 °C (−128.6 °F) in the interior in winter and reach a maximum of between 5 °C (41 °F) and 15 °C (59 °F) near the coast in summer. Sunburn is often a health issue as the snow surface reflects almost all of the ultraviolet light falling on it. Given the latitude, long periods of constant darkness or constant sunlight create climates unfamiliar to human beings in much of the rest of the world.

What is Antarctica topographically ?
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A: frozen desert


Problem: In the latter part of the second revolution, Thomas Alva Edison developed many devices that greatly influenced life around the world and is often credited with the creation of the first industrial research laboratory. In 1882, Edison switched on the world's first large-scale electrical supply network that provided 110 volts direct current to fifty-nine customers in lower Manhattan. Also toward the end of the second industrial revolution, Nikola Tesla made many contributions in the field of electricity and magnetism in the late 19th and early 20th centuries.
What Did Thomas Edison switch to in 1882?
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Answer: the world's first large-scale electrical supply network


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The original post-punk movement ended as the bands associated with the movement turned away from its aesthetics, often in favor of more commercial sounds. Many of these groups would continue recording as part of the new pop movement, with entryism becoming a popular concept. In the United States, driven by MTV and modern rock radio stations, a number of post-punk acts had an influence on or became part of the Second British Invasion of "New Music" there. Some shifted to a more commercial new wave sound (such as Gang of Four), while others were fixtures on American college radio and became early examples of alternative rock. Perhaps the most successful band to emerge from post-punk was U2, who combined elements of religious imagery together with political commentary into their often anthemic music.
Who decided not to shift their sound?
A: unanswerable


Context and question: The first indigenous group encountered by Columbus were the 250,000 Taínos of Hispaniola who represented the dominant culture in the Greater Antilles and the Bahamas. Within thirty years about 70% of the Taínos had died. They had no immunity to European diseases, so outbreaks of measles and smallpox ravaged their population. Increasing punishment of the Taínos for revolting against forced labour, despite measures put in place by the encomienda, which included religious education and protection from warring tribes, eventually led to the last great Taíno rebellion.
Why were outbreaks of measles and smallpox able to so easily decimate the Taínos' population?
Answer: no immunity to European diseases


Question: Since the early 1960s, theoretical linguists have moved away from the traditional concept of a phoneme, preferring to consider basic units at a more abstract level, as a component of morphemes; these units can be called morphophonemes, and analysis using this approach is called morphophonology.
Is there an answer to this question: What kind of linguists are leaving the old phonemes behind?

Answer: unanswerable


Question: By the 20th century, the saloon, or lounge bar, had become a middle-class room[citation needed]—carpets on the floor, cushions on the seats, and a penny or two on the prices,[citation needed] while the public bar, or tap room, remained working class with bare boards, sometimes with sawdust to absorb the spitting and spillages (known as "spit and sawdust"), hard bench seats, and cheap beer[citation needed]. This bar was known as the four-ale bar from the days when the cheapest beer served there cost 4 pence (4d) a quart.[citation needed]
Is there an answer to this question: What is another name for the lounge bar?

Answer:
saloon