Problem: Muslim world:

Muslim scientists contributed to advances in the sciences. They placed far greater emphasis on experiment than had the Greeks. This led to an early scientific method being developed in the Muslim world, where progress in methodology was made, beginning with the experiments of Ibn al-Haytham (Alhazen) on optics from circa 1000, in his Book of Optics. The most important development of the scientific method was the use of experiments to distinguish between competing scientific theories set within a generally empirical orientation, which began among Muslim scientists. Ibn al-Haytham is also regarded as the father of optics, especially for his empirical proof of the intromission theory of light. Some have also described Ibn al-Haytham as the "first scientist." al-Khwarzimi's invented the log base systems that are being used today, he also contributed theorems in trigonometry as well as limits. Recent studies show that it is very likely that the Medieval Muslim artists were aware of advanced decagonal quasicrystal geometry (discovered half a millennium later in the 1970s and 1980s in the West) and used it in intricate decorative tilework in the architecture.

Ibn al-Haytham wrote about his work around the year 1000, what was it?
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A: Book of Optics

Problem: There are as many as 22 public beaches (most beaches on St Barthelemy are known as "Anse de..." etc. ) of which 15 are considered suitable for swimming. They are categorized and divided into two groups, the leeward side (calm waters protected by the island itself) and windward side (some of which are protected by hills and reefs). The windward beaches are popular for windsurfing. The beach of St Jean is suitable for water sports and facilities have been created for that purpose. The long beach at Lorient has shade and is a quiet beach as compared to St. Jean.
The windward side of St. Barts is popular for what type of activity?
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Answer: windsurfing

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Reacting to media criticism of Michelle Obama during the 2008 presidential election, Charles Kenzie Steele, Jr., CEO of the Southern Christian Leadership Conference said, "Why are they attacking Michelle Obama, and not really attacking, to that degree, her husband? Because he has no slave blood in him." He later claimed his comment was intended to be "provocative" but declined to expand on the subject. Former Secretary of State Condoleezza Rice (who was famously mistaken for a "recent American immigrant" by French President Nicolas Sarkozy), said "descendants of slaves did not get much of a head start, and I think you continue to see some of the effects of that." She has also rejected an immigrant designation for African Americans and instead prefers the term "black" or "white" .
Why did Steele think people were not attacking Barrack Obama?
A: Because he has no slave blood in him

Context and question: In 1968 Ronald Melzack and Kenneth Casey described pain in terms of its three dimensions: "sensory-discriminative" (sense of the intensity, location, quality and duration of the pain), "affective-motivational" (unpleasantness and urge to escape the unpleasantness), and "cognitive-evaluative" (cognitions such as appraisal, cultural values, distraction and hypnotic suggestion). They theorized that pain intensity (the sensory discriminative dimension) and unpleasantness (the affective-motivational dimension) are not simply determined by the magnitude of the painful stimulus, but "higher" cognitive activities can influence perceived intensity and unpleasantness. Cognitive activities "may affect both sensory and affective experience or they may modify primarily the affective-motivational dimension. Thus, excitement in games or war appears to block both dimensions of pain, while suggestion and placebos may modulate the affective-motivational dimension and leave the sensory-discriminative dimension relatively undisturbed." (p. 432) The paper ends with a call to action: "Pain can be treated not only by trying to cut down the sensory input by anesthetic block, surgical intervention and the like, but also by influencing the motivational-affective and cognitive factors as well." (p. 435)
What did Melzack and Casey theorize could influence the perception of the magnitude of pain?
Answer: cognitive activities

Question: Feynman devoted the latter half of his book What Do You Care What Other People Think? to his experience on the Rogers Commission, straying from his usual convention of brief, light-hearted anecdotes to deliver an extended and sober narrative. Feynman's account reveals a disconnect between NASA's engineers and executives that was far more striking than he expected. His interviews of NASA's high-ranking managers revealed startling misunderstandings of elementary concepts. For instance, NASA managers claimed that there was a 1 in 100,000 chance of a catastrophic failure aboard the shuttle, but Feynman discovered that NASA's own engineers estimated the chance of a catastrophe at closer to 1 in 200. He concluded that the space shuttle reliability estimate by NASA management was fantastically unrealistic, and he was particularly angered that NASA used these figures to recruit Christa McAuliffe into the Teacher-in-Space program. He warned in his appendix to the commission's report (which was included only after he threatened not to sign the report), "For a successful technology, reality must take precedence over public relations, for nature cannot be fooled."
Is there an answer to this question: Which way did he avoid writing about his experience on the Rogers Commission?

Answer: unanswerable

Problem: The Blitz:

While Knickebein was used by German crews en masse, X-Gerat use was limited to specially trained pathfinder crews. Special receivers were mounted in He 111s, with a radio mast on the bomber's fuselage. The system worked on a higher frequency (6677 MHz, compared to Knickebein's 3033 MHz). Transmitters on the ground sent pulses at a rate of 180 per minute. X-Gerat received and analysed the pulses, giving the pilot both visual and aural "on course" signals. Three beams intersected the beam along the He 111's flight path. The first cross-beam acted as a warning for the bomb-aimer to start the bombing-clock which he would activate only when the second cross-beam was reached. When the third cross-beam was reached the bomb aimer activated a third trigger, which stopped the first hand of the equipment's clock, with the second hand continuing. When the second hand re-aligned with the first, the bombs were released. The clock's timing mechanism was co-ordinated with the distances of the intersecting beams from the target so the target was directly below when the bomb release occurred.

What mechanism cause the bombs to be released?
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A:
clock's timing