Problem: Police:

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).

When did the Channel region reject routine cross-border policing?
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A: unanswerable

Problem: According to a 2001 report from The World Factbook by CIA, about 50% of Nigeria's population is Muslim, 40% are Christians and 10% adhere to local religions. But in some recent report, the Christian population is now sightly larger than the Muslim population. An 18 December 2012 report on religion and public life by the Pew Research Center stated that in 2010, 49.3 percent of Nigeria's population was Christian, 48.8 percent was Muslim, and 1.9 percent were followers of indigenous and other religions, or unaffiliated. Additionally, the 2010s census of Association of Religion Data Archives has reported that 46.5 percent of the total population is Christian, slightly bigger than the Muslim population of 45.5 percent, and that 7.7 percent are members of other religious groups.
In 2001, what percent of Nigeria's population followed local religions?
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Answer: 10%

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In their attempt to ensure white supremacy decades after emancipation, in the early 20th century, most southern states created laws based on the one-drop rule, defining as black, persons with any known African ancestry. This was a stricter interpretation than what had prevailed in the 19th century; it ignored the many mixed families in the state and went against commonly accepted social rules of judging a person by appearance and association. Some courts called it "the traceable amount rule." Anthropologists called it an example of a hypodescent rule, meaning that racially mixed persons were assigned the status of the socially subordinate group.
What is the one-drop rule?
A: defining as black, persons with any known African ancestry

Context and question: In 2005, the number of public employees per thousand inhabitants in the Portuguese government (70.8) was above the European Union average (62.4 per thousand inhabitants). By EU and USA standards, Portugal's justice system was internationally known as being slow and inefficient, and by 2011 it was the second slowest in Western Europe (after Italy); conversely, Portugal has one of the highest rates of judges and prosecutorsover 30 per 100,000 people. The entire Portuguese public service has been known for its mismanagement, useless redundancies, waste, excess of bureaucracy and a general lack of productivity in certain sectors, particularly in justice.
What was the average number of public employees per every thousand inhabitants for the European Union in 2005?
Answer: 62.4

Question: For the past 25 years, the Tucson Folk Festival has taken place the first Saturday and Sunday of May in downtown Tucson's El Presidio Park. In addition to nationally known headline acts each evening, the Festival highlights over 100 local and regional musicians on five stages is one of the largest free festivals in the country. All stages are within easy walking distance. Organized by the Tucson Kitchen Musicians Association, volunteers make this festival possible. KXCI 91.3-FM, Arizona's only community radio station, is a major partner, broadcasting from the Plaza Stage throughout the weekend. In addition, there are numerous workshops, events for children, sing-alongs, and a popular singer/songwriter contest. Musicians typically play 30-minute sets, supported by professional audio staff volunteers. A variety of food and crafts are available at the festival, as well as local micro-brews. All proceeds from sales go to fund future festivals.
Is there an answer to this question: When is the Tucson Folk Festival held?

Answer: the first Saturday and Sunday of May

QUES: During this period Boston flourished culturally as well, admired for its rarefied literary life and generous artistic patronage, with members of old Boston familieseventually dubbed Boston Brahminscoming to be regarded as the nation's social and cultural elites.

Who came to be known as the nation's social elites?
What is the answer?
ANS:
Boston Brahmins