Problem: Solar energy:

Hydrogen production technologies been a significant area of solar chemical research since the 1970s. Aside from electrolysis driven by photovoltaic or photochemical cells, several thermochemical processes have also been explored. One such route uses concentrators to split water into oxygen and hydrogen at high temperatures (2,3002,600 C or 4,2004,700 F). Another approach uses the heat from solar concentrators to drive the steam reformation of natural gas thereby increasing the overall hydrogen yield compared to conventional reforming methods. Thermochemical cycles characterized by the decomposition and regeneration of reactants present another avenue for hydrogen production. The Solzinc process under development at the Weizmann Institute uses a 1 MW solar furnace to decompose zinc oxide (ZnO) at temperatures above 1,200 C (2,200 F). This initial reaction produces pure zinc, which can subsequently be reacted with water to produce hydrogen.

What is one of the thermochemical processes that has been explored besides electrolysis?
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A: uses concentrators to split water into oxygen and hydrogen at high temperatures

Problem: Comcast was given an "F" for its corporate governance practices in 2010, by Corporate Library, an independent shareholder-research organization. According to Corporate Library, Comcast's board of directors ability to oversee and control management was severely compromised (at least in 2010) by the fact that several of the directors either worked for the company or had business ties to it (making them susceptible to management pressure), and a third of the directors were over 70 years of age. According to the Wall Street Journal nearly two-thirds of the flights of Comcast's $40 million corporate jet purchased for business travel related to the NBCU acquisition, were to CEO Brian Roberts' private homes or to resorts.
How much did Comcast pay for flights of its company jet in 2010?
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Answer: $40 million

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Operating at normal power line frequencies, universal motors are often found in a range less than 1000 watts. Universal motors also formed the basis of the traditional railway traction motor in electric railways. In this application, the use of AC to power a motor originally designed to run on DC would lead to efficiency losses due to eddy current heating of their magnetic components, particularly the motor field pole-pieces that, for DC, would have used solid (un-laminated) iron and they are now rarely used.
What is the result of using AC power on a DC motor?
A: efficiency losses

Context and question: From the first established world championship, the top professional wrestlers have garnered fame within mainstream society. Each successive generation has produced a number of wrestlers who extend their careers into the realms of music, acting, writing, business, politics or public speaking, and are known to those who are unfamiliar with wrestling in general. Conversely, celebrities from other sports or general pop culture also become involved with wrestling for brief periods of time. A prime example of this is The Rock 'n' Wrestling Connection of the 1980s, which combined wrestling with MTV.
What are some other career paths wrestlers embarked on?
Answer: music, acting, writing, business, politics or public speaking

Question: The Richmond Times-Dispatch, the local daily newspaper in Richmond with a Sunday circulation of 120,000, is owned by BH Media, a subsidiary of Warren Buffett's Berkshire Hathaway company. Style Weekly is a standard weekly publication covering popular culture, arts, and entertainment, owned by Landmark Communications. RVA Magazine is the city's only independent art music and culture publication, was once monthly, but is now issued quarterly. The Richmond Free Press and the Voice cover the news from an African-American perspective.
Is there an answer to this question: What company owns the company that owns the Richmond Times-Dispatch?

Answer: Berkshire Hathaway

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Patents have been criticized in the developing world, as they are thought to reduce access to existing medicines. Reconciling patents and universal access to medicine would require an efficient international policy of price discrimination. Moreover, under the TRIPS agreement of the World Trade Organization, countries must allow pharmaceutical products to be patented. In 2001, the WTO adopted the Doha Declaration, which indicates that the TRIPS agreement should be read with the goals of public health in mind, and allows some methods for circumventing pharmaceutical monopolies: via compulsory licensing or parallel imports, even before patent expiration.
What did the WTO Declaration do?
A:
unanswerable