Problem: Paris:

During the Hundred Years' War, the army of the Duke of Burgundy and a force of about two hundred English soldiers occupied Paris from May 1420 until 1436. They repelled an attempt by Joan of Arc to liberate the city in 1429. A century later, during the French Wars of Religion, Paris was a stronghold of the Catholic League. On 24 August 1572, Paris was the site of the St. Bartholomew's Day massacre, when thousands of French Protestants were killed. The last of these wars, the eighth one, ended in 1594, after Henri IV had converted to Catholicism and was finally able to enter Paris as he supposedly declared Paris vaut bien une messe ("Paris is well worth a Mass"). The city had been neglected for decades; by the time of his assassination in 1610, Henry IV had rebuilt the Pont Neuf, the first Paris bridge with sidewalks and not lined with buildings, linked with a new wing the Louvre to the Tuileries Palace, and created the first Paris residential square, the Place Royale, now Place des Vosges.

Who was responsible for rebuilding Paris in the 1600's
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A: Henry IV

Problem: About 40,000,000 tons were produced in 1984[needs update]. It is obtained as the "heavy" (i.e., difficult to distill) fraction. Material with a boiling point greater than around 500 C is considered asphalt. Vacuum distillation separates it from the other components in crude oil (such as naphtha, gasoline and diesel). The resulting material is typically further treated to extract small but valuable amounts of lubricants and to adjust the properties of the material to suit applications. In a de-asphalting unit, the crude asphalt is treated with either propane or butane in a supercritical phase to extract the lighter molecules, which are then separated. Further processing is possible by "blowing" the product: namely reacting it with oxygen. This step makes the product harder and more viscous.
What method is used to divide asphalt from other materials?
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Answer: Vacuum distillation

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
David Archuleta's performance of John Lennon's "Imagine" was considered by many as one of the best of the season. Jennifer Lopez, who was brought in as a judge in season ten, called it a beautiful song-moment that she will never forget. Jason Castro's semi-final performance of "Hallelujah" also received considerable attention, and it propelled Jeff Buckley's version of the song to the top of the Billboard digital song chart. This was the first season in which contestants' recordings were released onto iTunes after their performances, and although sales information was not released so as not to prejudice the contest, leaked information indicated that contestants' songs frequently reached the top of iTunes sales charts.
Which contestant sang "Imagine" on season seven of American Idol?
A: David Archuleta

Context and question: The concept of race in Brazil is complex. A Brazilian child was never automatically identified with the racial type of one or both of his or her parents, nor were there only two categories to choose from. Between an individual of unmixed West African descent and a very light mulatto individual, more than a dozen racial categories were acknowledged, based on various combinations of hair color, hair texture, eye color, and skin color. These types grade into each other like the colors of the spectrum, and no one category stands significantly isolated from the rest. In Brazil, people are classified by appearance, not heredity.
How does one determine ethnicity in Brazil?
Answer: based on various combinations of hair color, hair texture, eye color, and skin color

Question: Since the angel Gabriel had told Mary (according to Luke 1:36) that Elizabethhaving previously been barrenwas then miraculously pregnant, Mary hurried to see Elizabeth, who was living with her husband Zechariah in "Hebron, in the hill country of Judah". Mary arrived at the house and greeted Elizabeth who called Mary "the mother of my Lord", and Mary spoke the words of praise that later became known as the Magnificat from her first word in the Latin version.[Luke 1:46-55] After about three months, Mary returned to her own house.[Lk 1:56-57]
Is there an answer to this question: What did the angel Gabriel tell Elizabeth whom Mary was?

Answer: unanswerable

Question: Not a lot of empirical work on the practices of inter/transnational information and intelligence sharing has been undertaken. A notable exception is James Sheptycki's study of police cooperation in the English Channel region (2002), which provides a systematic content analysis of information exchange files and a description of how these transnational information and intelligence exchanges are transformed into police case-work. The study showed that transnational police information sharing was routinized in the cross-Channel region from 1968 on the basis of agreements directly between the police agencies and without any formal agreement between the countries concerned. By 1992, with the signing of the Schengen Treaty, which formalized aspects of police information exchange across the territory of the European Union, there were worries that much, if not all, of this intelligence sharing was opaque, raising questions about the efficacy of the accountability mechanisms governing police information sharing in Europe (Joubert and Bevers, 1996).
Is there an answer to this question: What did the Schengen Treaty do for policing?

Answer:
formalized aspects of police information exchange across the territory of the European Union