Article: Detroit is one of 12 American metropolitan areas that are home to professional teams representing the four major sports in North America. All these teams but one play within the city of Detroit itself (the NBA's Detroit Pistons play in suburban Auburn Hills at The Palace of Auburn Hills). There are three active major sports venues within the city: Comerica Park (home of the Major League Baseball team Detroit Tigers), Ford Field (home of the NFL's Detroit Lions), and Joe Louis Arena (home of the NHL's Detroit Red Wings). A 1996 marketing campaign promoted the nickname "Hockeytown".

Question: Where do the Red Wings play?
Ans: Joe Louis Arena

Here is a question about this article: Alpine glaciers can be straight rivers of ice, long sweeping rivers, spread in a fan-like shape (Piedmont glaciers), and curtains of ice that hang from vertical slopes of the mountain peaks. The stress of the movement causes the ice to break and crack loudly, perhaps explaining why the mountains were believed to be home to dragons in the medieval period. The cracking creates unpredictable and dangerous crevasses, often invisible under new snowfall, which cause the greatest danger to mountaineers.
What is the answer to this question: What causes the ice to break and crack loudly?
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So... The stress of the movement

The problem: Answer a question about this article:
The Pamiri people of Gorno-Badakhshan Autonomous Province in the southeast, bordering Afghanistan and China, though considered part of the Tajik ethnicity, nevertheless are distinct linguistically and culturally from most Tajiks. In contrast to the mostly Sunni Muslim residents of the rest of Tajikistan, the Pamiris overwhelmingly follow the Ismaili sect of Islam, and speak a number of Eastern Iranian languages, including Shughni, Rushani, Khufi and Wakhi. Isolated in the highest parts of the Pamir Mountains, they have preserved many ancient cultural traditions and folk arts that have been largely lost elsewhere in the country.
What mountians do the Pamiri people call home?
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The answer: Pamir Mountains

Problem: Please answer a question about the following article about Gramophone record:
Beginning in 1939, Dr. Peter Goldmark and his staff at Columbia Records and at CBS Laboratories undertook efforts to address problems of recording and playing back narrow grooves and developing an inexpensive, reliable consumer playback system. It took about eight years of study, except when it was suspended because of World War II. Finally, the 12-inch (30 cm) Long Play (LP) 33 13 rpm microgroove record album was introduced by the Columbia Record Company at a New York press conference on June 18, 1948.
How long did it take Columbia to produce a consumer friendly long play record?
A: about eight years

Question: Read this and answer the question

There are 366 railway stations in the London Travelcard Zones on an extensive above-ground suburban railway network. South London, particularly, has a high concentration of railways as it has fewer Underground lines. Most rail lines terminate around the centre of London, running into eighteen terminal stations, with the exception of the Thameslink trains connecting Bedford in the north and Brighton in the south via Luton and Gatwick airports. London has Britain's busiest station by number of passengers Waterloo, with over 184 million people using the interchange station complex (which includes Waterloo East station) each year. Clapham Junction is the busiest station in Europe by the number of trains passing.

How many railway stations are utilized by London's railway network?
Answer: 366

The racial categories represent a social-political construct for the race or races that respondents consider themselves to be and "generally reflect a social definition of race recognized in this country." OMB defines the concept of race as outlined for the U.S. Census as not "scientific or anthropological" and takes into account "social and cultural characteristics as well as ancestry", using "appropriate scientific methodologies" that are not "primarily biological or genetic in reference." The race categories include both racial and national-origin groups.
Who defines the concept of race in the United States Census?
OMB