Problem: Beyoncé:

In 2015 Beyoncé signed an open letter which the ONE Campaign had been collecting signatures for; the letter was addressed to Angela Merkel and Nkosazana Dlamini-Zuma, urging them to focus on women as they serve as the head of the G7 in Germany and the AU in South Africa respectively, which will start to set the priorities in development funding before a main UN summit in September 2015 that will establish new development goals for the generation.

What was Angela Merkel serving as in relation to the letter?
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A: the head of the G7 in Germany


Problem: A global drop in sea level at the end of the Devonian reversed early in the Carboniferous; this created the widespread epicontinental seas and carbonate deposition of the Mississippian. There was also a drop in south polar temperatures; southern Gondwana was glaciated throughout the period, though it is uncertain if the ice sheets were a holdover from the Devonian or not. These conditions apparently had little effect in the deep tropics, where lush coal swamps flourished within 30 degrees of the northernmost glaciers. A mid-Carboniferous drop in sea-level precipitated a major marine extinction, one that hit crinoids and ammonites especially hard. This sea-level drop and the associated unconformity in North America separate the Mississippian Period from the Pennsylvanian period.
How widespread was the drop in sea llevel in the Carboniferous?
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Nintendo staff members reported that demo users complained about the difficulty of the control scheme. Aonuma realized that his team had implemented Wii controls under the mindset of "forcing" users to adapt, instead of making the system intuitive and easy to use. He began rethinking the controls with Miyamoto to focus on comfort and ease.[q] The camera movement was reworked and item controls were changed to avoid accidental button presses.[r] In addition, the new item system required use of the button that had previously been used for the sword. To solve this, sword controls were transferred back to gestures—something E3 attendees had commented they would like to see. This reintroduced the problem of using a right-handed swing to control a left-handed sword attack. The team did not have enough time before release to rework Link's character model, so they instead flipped the entire game—everything was made a mirror image.[s] Link was now right-handed, and references to "east" and "west" were switched around. The GameCube version, however, was left with the original orientation. The Twilight Princess player's guide focuses on the Wii version, but has a section in the back with mirror-image maps for GameCube users.[t]
Using items in the game took over the controls used for what weapon?
A: sword


Context and question: On February 8, 1955, Malenkov was officially demoted to deputy Prime Minister. As First Secretary of the Central Committee of the Communist Party, Nikita Khrushchev's authority was significantly enhanced by Malenkov's demotion.
Who was demoted on February 8, 1945?
Answer: unanswerable


Question: The advent of the Industrial Revolution in Britain provided a great boost to cotton manufacture, as textiles emerged as Britain's leading export. In 1738, Lewis Paul and John Wyatt, of Birmingham, England, patented the roller spinning machine, as well as the flyer-and-bobbin system for drawing cotton to a more even thickness using two sets of rollers that traveled at different speeds. Later, the invention of the James Hargreaves' spinning jenny in 1764, Richard Arkwright's spinning frame in 1769 and Samuel Crompton's spinning mule in 1775 enabled British spinners to produce cotton yarn at much higher rates. From the late 18th century on, the British city of Manchester acquired the nickname "Cottonopolis" due to the cotton industry's omnipresence within the city, and Manchester's role as the heart of the global cotton trade.
Is there an answer to this question: What event produced an expansion of the British cotton industry?

Answer: Industrial Revolution


Problem: Arsenal F.C.:

Highbury could hold more than 60,000 spectators at its peak, and had a capacity of 57,000 until the early 1990s. The Taylor Report and Premier League regulations obliged Arsenal to convert Highbury to an all-seater stadium in time for the 1993–94 season, thus reducing the capacity to 38,419 seated spectators. This capacity had to be reduced further during Champions League matches to accommodate additional advertising boards, so much so that for two seasons, from 1998 to 2000, Arsenal played Champions League home matches at Wembley, which could house more than 70,000 spectators.

During what time did Arsenal play at Wembley?
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A:
1998 to 2000