Problem: Sahara:

In the 16th century the northern fringe of the Sahara, such as coastal regencies in present-day Algeria and Tunisia, as well as some parts of present-day Libya, together with the semi-autonomous kingdom of Egypt, were occupied by the Ottoman Empire. From 1517 Egypt was a valued part of the Ottoman Empire, ownership of which provided the Ottomans with control over the Nile Valley, the east Mediterranean and North Africa. The benefit of the Ottoman Empire was the freedom of movement for citizens and goods. Trade exploited the Ottoman land routes to handle the spices, gold and silk from the East, manufactures from Europe, and the slave and gold traffic from Africa. Arabic continued as the local language and Islamic culture was much reinforced. The Sahel and southern Sahara regions were home to several independent states or to roaming Tuareg clans.

What key feature made Algeria a vital part of the Ottoman empire?
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A: unanswerable

Problem: Madonna performed at the Hope for Haiti Now: A Global Benefit for Earthquake Relief concert in January 2010. In April she released her third live album, Sticky & Sweet Tour. It was her first release under Live Nation, but was distributed by Warner Bros. Madonna granted American TV show Glee the rights to her entire catalogue of music, and the producers planned an episode featuring Madonna songs exclusively. Glee: The Music, The Power of Madonna, an EP containing eight cover versions of Madonna songs featured in the episode, was released afterward and debuted at number one on the Billboard 200.
What is the name of the episode of Glee that featured Madonna's songs?
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Answer: Glee: The Music, The Power of Madonna

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Upon its founding in 1949, West Germany had eleven states. These were reduced to nine in 1952 when three south-western states (South Baden, Wurttemberg-Hohenzollern, and Wurttemberg-Baden) merged to form Baden-Wurttemberg. From 1957, when the French-occupied Saar Protectorate was returned and formed into the Saarland, the Federal Republic consisted of ten states, which are referred to as the "Old States" today. West Berlin was under the sovereignty of the Western Allies and neither a Western German state nor part of one. However, it was in many ways de facto integrated with West Germany under a special status.
When was East Germany founded?
A: unanswerable

Context and question: A 2009 Cochrane review concluded that thiazide antihypertensive drugs reduce the risk of death (RR 0.89), stroke (RR 0.63), coronary heart disease (RR 0.84), and cardiovascular events (RR 0.70) in people with high blood pressure. In the ensuring years other classes of antihypertensive drug were developed and found wide acceptance in combination therapy, including loop diuretics (Lasix/furosemide, Hoechst Pharmaceuticals, 1963), beta blockers (ICI Pharmaceuticals, 1964) ACE inhibitors, and angiotensin receptor blockers. ACE inhibitors reduce the risk of new onset kidney disease [RR 0.71] and death [RR 0.84] in diabetic patients, irrespective of whether they have hypertension.
What type of drugs reduced the risk of strokes and heart disease for people with high blood pressure?
Answer: thiazide antihypertensive drugs

Question: On leaving the University of Oxford, in 1676, Edmond Halley visited Saint Helena and set up an astronomical observatory with a 7.3-metre-long (24 ft) aerial telescope with the intention of studying stars from the Southern Hemisphere. The site of this telescope is near Saint Mathew's Church in Hutt's Gate, in the Longwood district. The 680-metre (2,230 ft) high hill there is named for him and is called Halley's Mount.
Is there an answer to this question: What university did Edmond Halley attend?

Answer: University of Oxford

QUES: The predominant educational psychology from the 1750s onward, especially in northern European countries was associationism, the notion that the mind associates or dissociates ideas through repeated routines. In addition to being conducive to Enlightenment ideologies of liberty, self-determination and personal responsibility, it offered a practical theory of the mind that allowed teachers to transform longstanding forms of print and manuscript culture into effective graphic tools of learning for the lower and middle orders of society. Children were taught to memorize facts through oral and graphic methods that originated during the Renaissance.

What was the predominant educational psychology from the 1750s onward?
What is the answer?
ANS:
associationism,