Problem: Nigeria:

On 24 March 2009, the Nigerian Federal Ministry of Science and Technology, NigComSat Ltd. and CGWIC signed another contract for the in-orbit delivery of the NigComSat-1R satellite. NigComSat-1R was also a DFH-4 satellite, and the replacement for the failed NigComSat-1 was successfully launched into orbit by China in Xichang on December 19, 2011. The satellite according to then-Nigerian President Goodluck Jonathan which was paid for by the insurance policy on NigComSat-1 which de-orbited in 2009, would have a positive impact on national development in various sectors such as communications, internet services, health, agriculture, environmental protection and national security.

When was Nigeria's fourth satellite launched?
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A: December 19, 2011


Problem: Phosphor-based LED efficiency losses are due to the heat loss from the Stokes shift and also other phosphor-related degradation issues. Their luminous efficacies compared to normal LEDs depend on the spectral distribution of the resultant light output and the original wavelength of the LED itself. For example, the luminous efficacy of a typical YAG yellow phosphor based white LED ranges from 3 to 5 times the luminous efficacy of the original blue LED because of the human eye's greater sensitivity to yellow than to blue (as modeled in the luminosity function). Due to the simplicity of manufacturing the phosphor method is still the most popular method for making high-intensity white LEDs. The design and production of a light source or light fixture using a monochrome emitter with phosphor conversion is simpler and cheaper than a complex RGB system, and the majority of high-intensity white LEDs presently on the market are manufactured using phosphor light conversion.
What is the most popular method for making high-intensity white LEDs?
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Answer: phosphor method


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Lester Brown states that the market "does not incorporate the indirect costs of providing goods or services into prices, it does not value nature's services adequately, and it does not respect the sustainable-yield thresholds of natural systems". It also favors the near term over the long term, thereby showing limited concern for future generations. Tax and subsidy shifting can help overcome these problems, though is also problematic to combine different international normative regimes regulating this issue.
Lester Brown states that the market does not incorporate what?
A: the indirect costs of providing goods or services into prices


Context and question: These years included what was called "spectacularly malicious coverage" of the Labour Party by The Sun and other newspapers. During the general election of 1983 The Sun ran a front page featuring an unflattering photograph of Michael Foot, then aged almost 70, claiming he was unfit to be Prime Minister on grounds of his age, appearance and policies, alongside the headline "Do You Really Want This Old Fool To Run Britain?" A year later, in 1984, The Sun made clear its enthusiastic support for the re-election of Ronald Reagan as president in the USA. Reagan was two weeks off his 74th birthday when he started his second term, in January 1985.
Which party was The Sun accused of covering maliciously?
Answer: Labour Party


Question: The army was still equipped with the Dreyse needle gun of Battle of Königgrätz fame, which was by this time showing the age of its 25-year-old design. The rifle had a range of only 600 m (2,000 ft) and lacked the rubber breech seal that permitted aimed shots. The deficiencies of the needle gun were more than compensated for by the famous Krupp 6-pounder (3 kg) steel breech-loading cannons being issued to Prussian artillery batteries. Firing a contact-detonated shell, the Krupp gun had a longer range and a higher rate of fire than the French bronze muzzle loading cannon, which relied on faulty time fuses.
Is there an answer to this question: In which battle did the Dreyse needle gun gain its fame?

Answer: Battle of Königgrätz


Question: In recent years, the School has put on a musical version of The Bacchae (October 2009) as well as productions of A Funny Thing Happened on the Way to the Forum (May 2010), The Cherry Orchard (February 2011), Joseph K (October 2011), Cyrano de Bergerac (May 2012), Macbeth (October 2012), London Assurance (May 2013) and Jerusalem (October 2013). Upcoming in May 2014 was a production of A Midsummer Night's Dream . Often girls from surrounding schools, such as St George's, Ascot, St Mary's School Ascot, Windsor Girls' School and Heathfield St Mary's School, are cast in female roles. Boys from the School are also responsible for the lighting, sound and stage management of all the productions, under the guidance of several professional full-time theatre staff.
Is there an answer to this question: Who are cast in Eton's female roles in their productions?

Answer:
girls from surrounding schools