The problem: Answer a question about this article:
Several hundred pro-Tibet protesters gathered at the Trocadéro with banners and Tibetan flags, and remained there for a peaceful protest, never approaching the torch relay itself. Among them was Jane Birkin, who spoke to the media about the "lack of freedom of speech" in China. Also present was Thupten Gyatso, President of the French Tibetan community, who called upon pro-Tibet demonstrators to "remain calm, non-violent, peaceful".
Who spoke to the media about China's lack of freedom of speech?
****
The answer: Jane Birkin


The problem: Answer a question about this article:
Beer is the world's most widely consumed and likely the oldest alcoholic beverage; it is the third most popular drink overall, after water and tea. The production of beer is called brewing, which involves the fermentation of starches, mainly derived from cereal grains—most commonly malted barley, although wheat, maize (corn), and rice are widely used. Most beer is flavoured with hops, which add bitterness and act as a natural preservative, though other flavourings such as herbs or fruit may occasionally be included. The fermentation process causes a natural carbonation effect which is often removed during processing, and replaced with forced carbonation. Some of humanity's earliest known writings refer to the production and distribution of beer: the Code of Hammurabi included laws regulating beer and beer parlours, and "The Hymn to Ninkasi", a prayer to the Mesopotamian goddess of beer, served as both a prayer and as a method of remembering the recipe for beer in a culture with few literate people.
What brewing process naturally carbonates beer?
****
The answer: fermentation


The problem: Answer a question about this article:
An additional 4.6 billion tonnes of uranium are estimated to be in sea water (Japanese scientists in the 1980s showed that extraction of uranium from sea water using ion exchangers was technically feasible). There have been experiments to extract uranium from sea water, but the yield has been low due to the carbonate present in the water. In 2012, ORNL researchers announced the successful development of a new absorbent material dubbed HiCap which performs surface retention of solid or gas molecules, atoms or ions and also effectively removes toxic metals from water, according to results verified by researchers at Pacific Northwest National Laboratory.
The presence of what substance in sea water has resulted in low yields when attempting to extract uranium?
****
The answer: carbonate


The problem: Answer a question about this article:
In Latin, papyri from Herculaneum dating before 79 AD (when it was destroyed) have been found that have been written in old Roman cursive, where the early forms of minuscule letters "d", "h" and "r", for example, can already be recognised. According to papyrologist Knut Kleve, "The theory, then, that the lower-case letters have been developed from the fifth century uncials and the ninth century Carolingian minuscules seems to be wrong." Both majuscule and minuscule letters existed, but the difference between the two variants was initially stylistic rather than orthographic and the writing system was still basically unicameral: a given handwritten document could use either one style or the other but these were not mixed. European languages, except for Ancient Greek and Latin, did not make the case distinction before about 1300.[citation needed]
What was the initial difference between majuscule and minuscule letters? 
****
The answer:
stylistic