Here is a question about this article: Hydropower is produced in 150 countries, with the Asia-Pacific region generating 32 percent of global hydropower in 2010. China is the largest hydroelectricity producer, with 721 terawatt-hours of production in 2010, representing around 17 percent of domestic electricity use. There are now three hydroelectricity plants larger than 10 GW: the Three Gorges Dam in China, Itaipu Dam across the Brazil/Paraguay border, and Guri Dam in Venezuela. The cost of hydroelectricity is low, making it a competitive source of renewable electricity. The average cost of electricity from a hydro plant larger than 10 megawatts is 3 to 5 U.S. cents per kilowatt-hour.
What is the answer to this question: Hydropower is produced in how many countries?
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So... 150

Here is a question about this article: A monument to the huge human cost of some of the gigantic construction projects of the early Ming dynasty is the Yangshan Quarry (located some 1520 km (912 mi) east of the walled city and Ming Xiaoling mausoleum), where a gigantic stele, cut on the orders of the Yongle Emperor, lies abandoned, just as it was left 600 years ago when it was understood it was impossible to move or complete it.
What is the answer to this question: How far from Nanjing is the Yangshan Quarry?
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So... 1520 km (912 mi) east of the walled city

Here is a question about this article: The board consists of nine directors. Michael Dell, the founder of the company, serves as chairman of the board and chief executive officer. Other board members include Don Carty, William Gray, Judy Lewent, Klaus Luft, Alex Mandl, Michael A. Miles, and Sam Nunn. Shareholders elect the nine board members at meetings, and those board members who do not get a majority of votes must submit a resignation to the board, which will subsequently choose whether or not to accept the resignation. The board of directors usually sets up five committees having oversight over specific matters. These committees include the Audit Committee, which handles accounting issues, including auditing and reporting; the Compensation Committee, which approves compensation for the CEO and other employees of the company; the Finance Committee, which handles financial matters such as proposed mergers and acquisitions; the Governance and Nominating Committee, which handles various corporate matters (including nomination of the board); and the Antitrust Compliance Committee, which attempts to prevent company practices from violating antitrust laws.[citation needed]
What is the answer to this question: Who is the founder of Dell?
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So...
Michael Dell