Problem: Napoleon:

In 1840, Louis Philippe I obtained permission from the British to return Napoleon's remains to France. On 15 December 1840, a state funeral was held. The hearse proceeded from the Arc de Triomphe down the Champs-Élysées, across the Place de la Concorde to the Esplanade des Invalides and then to the cupola in St Jérôme's Chapel, where it remained until the tomb designed by Louis Visconti was completed. In 1861, Napoleon's remains were entombed in a porphyry sarcophagus in the crypt under the dome at Les Invalides.

 On what date was a state funeral held for Napoleon?
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A: 15 December 1840


Problem: The Indonesian Archipelago is split by the Wallace Line. This line runs along what is now known to be a tectonic plate boundary, and separates Asian (Western) species from Australasian (Eastern) species. The islands between Java/Borneo and Papua form a mixed zone, where both types occur, known as Wallacea. As the pace of development accelerates and populations continue to expand in Southeast Asia, concern has increased regarding the impact of human activity on the region's environment. A significant portion of Southeast Asia, however, has not changed greatly and remains an unaltered home to wildlife. The nations of the region, with only few exceptions, have become aware of the need to maintain forest cover not only to prevent soil erosion but to preserve the diversity of flora and fauna. Indonesia, for example, has created an extensive system of national parks and preserves for this purpose. Even so, such species as the Javan rhinoceros face extinction, with only a handful of the animals remaining in western Java.
Name the line that splits the Indonesian Archipelago?
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Answer: Wallace Line


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The problem of the direction of time arises directly from two contradictory facts. Firstly, the fundamental physical laws are time-reversal invariant; if a cinematographic film were taken of any process describable by means of the aforementioned laws and then played backwards, it would still portray a physically possible process. Secondly, our experience of time, at the macroscopic level, is not time-reversal invariant. Glasses can fall and break, but shards of glass cannot reassemble and fly up onto tables. We have memories of the past, and none of the future. We feel we can't change the past but can influence the future.
What do we experience as time-reversal invariant?
A: unanswerable


Context and question: As in most of eastern China the ethnic makeup of Nanjing is predominantly Han nationality (98.56 percent), with 50 other minority nationalities. In 1999, 77,394 residents belonged to minority nationalities, among which the vast majority (64,832) were Hui nationalities, contributing 83.76 percent to the minority population. The second and third largest minority groups were Manchu (2,311) and Zhuang (533) nationalities. Most of the minority nationalities resided in Jianye District, comprising 9.13 percent of the district's population.
What is the overwhelming ethnic majority in Nanjing?
Answer: Han nationality


Question: During most of the Neolithic age of Eurasia, people lived in small tribes composed of multiple bands or lineages. There is little scientific evidence of developed social stratification in most Neolithic societies; social stratification is more associated with the later Bronze Age. Although some late Eurasian Neolithic societies formed complex stratified chiefdoms or even states, states evolved in Eurasia only with the rise of metallurgy, and most Neolithic societies on the whole were relatively simple and egalitarian. Beyond Eurasia, however, states were formed during the local Neolithic in three areas, namely in the Preceramic Andes with the Norte Chico Civilization, Formative Mesoamerica and Ancient Hawaiʻi. However, most Neolithic societies were noticeably more hierarchical than the Paleolithic cultures that preceded them and hunter-gatherer cultures in general.
Is there an answer to this question: When did states evolve in Norte?

Answer: unanswerable


Question: The city's Greektown and three downtown casino resort hotels serve as part of an entertainment hub. The Eastern Market farmer's distribution center is the largest open-air flowerbed market in the United States and has more than 150 foods and specialty businesses. On Saturdays, about 45,000 people shop the city's historic Eastern Market. The Midtown and the New Center area are centered on Wayne State University and Henry Ford Hospital. Midtown has about 50,000 residents and attracts millions of visitors each year to its museums and cultural centers; for example, the Detroit Festival of the Arts in Midtown draws about 350,000 people.
Is there an answer to this question: Which festival attracts over a quarter million visitors?

Answer:
Detroit Festival of the Arts