Problem: Compact disc:

Meanwhile, with the advent and popularity of Internet-based distribution of files in lossily-compressed audio formats such as MP3, sales of CDs began to decline in the 2000s. For example, between 2000 - 2008, despite overall growth in music sales and one anomalous year of increase, major-label CD sales declined overall by 20%, although independent and DIY music sales may be tracking better according to figures released 30 March 2009, and CDs still continue to sell greatly. As of 2012, CDs and DVDs made up only 34 percent of music sales in the United States. In Japan, however, over 80 percent of music was bought on CDs and other physical formats as of 2015.

By what percentage have DIY and independent CDs increased?
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A: unanswerable


Problem: Switzerland's trade was blockaded by both the Allies and by the Axis. Economic cooperation and extension of credit to the Third Reich varied according to the perceived likelihood of invasion and the availability of other trading partners. Concessions reached a peak after a crucial rail link through Vichy France was severed in 1942, leaving Switzerland completely surrounded by the Axis. Over the course of the war, Switzerland interned over 300,000 refugees and the International Red Cross, based in Geneva, played an important part during the conflict. Strict immigration and asylum policies as well as the financial relationships with Nazi Germany raised controversy, but not until the end of the 20th century.
When did the financial relationship Switzerland had with Nazi Germany begin to raise controversy?
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Answer: end of the 20th century


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In the mid-fifteenth century, the religion of Sikhism was born. During the Mughal empire, many Hindus increasingly adopted Sikhism. These became a formidable military force against the Mughals and later against the Afghan Empire. After fighting Ahmad Shah Durrani in the later eighteenth century, the Sikhs took control of Punjab and managed to establish the Sikh Empire under Maharaja Ranjit Singh, which lasted from 1799 to 1849. The capital of Ranjit Singh's empire was Lahore, and the empire also extended into Afghanistan and Kashmir. Bhangi Misl was the fist Sikh band to conquer Lahore and other towns of Punjab. Syed Ahmad Barelvi a Muslim, waged jihad and attempted to create an Islamic state with strict enforcement of Islamic law. Syed Ahmad Barelvi in 1821 with many supporters and spent two years organising popular and material support for his Punjab campaign. He carefully developed a network of people through the length and breadth of India to collect funds and encourage volunteers, travelling widely throughout India attracting a following among pious Muslims. In December 1826 Sayyid Ahmad and his followers clashed with Sikh troops at Akora Khattak, but with no decisive result. In a major battle near the town of Balakot in 1831, Sayyid Ahmad and Shah Ismail Shaheed with volunteer Muslims were defeated by the professional Sikh Army.
Who won at Balakot?
A: the professional Sikh Army


Context and question: His father's career as a university professor influenced Friedrich's goals later in life. Both of his grandfathers, who lived long enough for Friedrich to know them, were scholars. Franz von Juraschek was a leading economist in Austria-Hungary and a close friend of Eugen Böhm von Bawerk, one of the founders of the Austrian School of Economics. Von Juraschek was a statistician and was later employed by the Austrian government. Friedrich's paternal grandfather, Gustav Edler von Hayek, taught natural sciences at the Imperial Realobergymnasium (secondary school) in Vienna. He wrote systematic works in biology, some of which are relatively well known.
What occupation did Hayek's grandfather's have?
Answer: scholars


Question: During a panel discussion at Harvard University's reunion for African American alumni during the 2003–04 academic year, two prominent black professors at the institution—Lani Guinier and Henry Louis Gates—pointed out an unintended effect of affirmative action policies at Harvard. They stated that only about a third of black Harvard undergraduates were from families in which all four grandparents were born into the African American community. The majority of black students at Harvard were Caribbean and African immigrants or their children, with some others the mixed-race children of biracial couples. One Harvard student, born in the South Bronx to a black family whose ancestors have been in the United States for multiple generations, said that there were so few Harvard students from the historic African American community that they took to calling themselves "the descendants" (i.e., descendants of American slaves). The reasons for this underrepresentation of historic African Americans, and possible remedies, remain a subject of debate.
Is there an answer to this question: What did two prominent white professors point out at the panel discussion?

Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Office buildings in Shanghai's financial district, including the Jin Mao Tower and the Hong Kong New World Tower, were evacuated. A receptionist at the Tibet Hotel in Chengdu said things were "calm" after the hotel evacuated its guests. Meanwhile, workers at a Ford plant in Sichuan were evacuated for about 10 minutes. Chengdu Shuangliu International Airport was shut down, and the control tower and regional radar control evacuated. One SilkAir flight was diverted and landed in Kunming as a result. Cathay Pacific delayed both legs of its quadruple daily Hong Kong to London route due to this disruption in air traffic services. Chengdu Shuangliu Airport reopened later on the evening of May 12, offering limited service as the airport began to be used as a staging area for relief operations.
What happened to office buildings in Shanghai?
A:
evacuated