Problem: Gothic architecture:

Expansive interior light has been a feature of Gothic cathedrals since the first structure was opened. The metaphysics of light in the Middle Ages led to clerical belief in its divinity and the importance of its display in holy settings. Much of this belief was based on the writings of Pseudo-Dionysius, a sixth-century mystic whose book, The Celestial Hierarchy, was popular among monks in France. Pseudo-Dionysius held that all light, even light reflected from metals or streamed through windows, was divine. To promote such faith, the abbot in charge of the Saint-Denis church on the north edge of Paris, the Abbot Suger, encouraged architects remodeling the building to make the interior as bright as possible.

Who held the belief that all light, including light reflected from walls and surfaces was fake?
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A: unanswerable


Problem: An album entitled Take Me Out to a Cubs Game was released in 2008. It is a collection of 17 songs and other recordings related to the team, including Harry Caray's final performance of "Take Me Out to the Ball Game" on September 21, 1997, the Steve Goodman song mentioned above, and a newly recorded rendition of "Talkin' Baseball" (subtitled "Baseball and the Cubs") by Terry Cashman. The album was produced in celebration of the 100th anniversary of the Cubs' 1908 World Series victory and contains sounds and songs of the Cubs and Wrigley Field.
How many songs are on the Take Me Out to a Cubs Game album?
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Answer: 17 songs


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The word "mammal" is modern, from the scientific name Mammalia coined by Carl Linnaeus in 1758, derived from the Latin mamma ("teat, pap"). All female mammals nurse their young with milk, which is secreted from special glands, the mammary glands. According to Mammal Species of the World, 5,416 species were known in 2006. These were grouped in 1,229 genera, 153 families and 29 orders. In 2008 the IUCN completed a five-year, 1,700-scientist Global Mammal Assessment for its IUCN Red List, which counted 5,488 accepted species.
How many families did mammals consist of as of 2006?
A: 153 families


Context and question: The Grands Magasins Dufayel was a huge department store with inexpensive prices built in 1890 in the northern part of Paris, where it reached a very large new customer base in the working class. In a neighborhood with few public spaces, it provided a consumer version of the public square. It educated workers to approach shopping as an exciting social activity not just a routine exercise in obtaining necessities, just as the bourgeoisie did at the famous department stores in the central city. Like the bourgeois stores, it helped transform consumption from a business transaction into a direct relationship between consumer and sought-after goods. Its advertisements promised the opportunity to participate in the newest, most fashionable consumerism at reasonable cost. The latest technology was featured, such as cinemas and exhibits of inventions like X-ray machines (that could be used to fit shoes) and the gramophone.
What were employees taught that made a shopping experience different? 
Answer: exciting social activity not just a routine exercise in obtaining necessities


Question: The element was probably named by the alchemist Paracelsus after the German word Zinke (prong, tooth). German chemist Andreas Sigismund Marggraf is credited with discovering pure metallic zinc in 1746. Work by Luigi Galvani and Alessandro Volta uncovered the electrochemical properties of zinc by 1800. Corrosion-resistant zinc plating of iron (hot-dip galvanizing) is the major application for zinc. Other applications are in batteries, small non-structural castings, and alloys, such as brass. A variety of zinc compounds are commonly used, such as zinc carbonate and zinc gluconate (as dietary supplements), zinc chloride (in deodorants), zinc pyrithione (anti-dandruff shampoos), zinc sulfide (in luminescent paints), and zinc methyl or zinc diethyl in the organic laboratory.
Is there an answer to this question: What two people discovered the electrochemical properties of zinc?

Answer: Luigi Galvani and Alessandro Volta


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Most major airports provide commercial outlets for products and services. Most of these companies, many of which are internationally known brands, are located within the departure areas. These include clothing boutiques and restaurants. Prices charged for items sold at these outlets are generally higher than those outside the airport. However, some airports now regulate costs to keep them comparable to "street prices". This term is misleading as prices often match the manufacturers' suggested retail price (MSRP) but are almost never discounted.[citation needed]
What do restaurants do to keep prices low?
A:
unanswerable