In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.

Q: Article: London--A morning's train ride away, across the Channel, English kids talk about Liverpool's soccer team in a Paris puB.Some Parisians have even started to go to work in London.In the 19thcentury, Charles Dickens compared the two great rival cities, London and Paris, in " A Tale of Two Cities".These days, it might be A Tale of One City. Parisians are these days likely to smile in sympathy at a visitor's broken French and respond in polite English.As jobs grew lack at home over recent years, perhaps 250,000 Frenchmen moved across the Channel.With an undersea tunnel, they could travel between cities in three hours.The European Union freed them from immigration and customs. Paris, rich in beauty, is more attractive.But London feels more full of life, and more fun until the pubs shut down. "For me, the difference is that London is real, alive," said Trevor Wheeler, a banker. Chantal Jaouen, a professional designer, agrees."I am French, but I'll stay in London," she saiD. There is, of course, the other view.Julie Lenoux is a student who moved to London two years ago."I think people laugh more in Paris," she saiD. In fact, London and Paris, with their obvious new similarities, are beyond the old descriptions.As the European Union gradually loosened controls, Londoners _ into Paris to shop, eat and buy property . "Both cities have changed beyond recognition." Said Larry Collins, a writer and sometimes a Londoner.Like most people who know both well, he finds the two now fit together comfortably. "I first fell in love with Paris in the 1950s and it is still a wonderful place," Collins saiD."But if I had to choose, it would be London.Things are so much more ordered, and life is better." But certainly not cheaper.In fancy parts of London, rents can be twice those on Avenue Foch in Paris.Deciding between London and Paris requires a lifestyle choice. Like Daphne Benoit, a French journalism student with perfect English, many young people are happy to be close enough so they don't have to choose. "I love Paris, my little neighborhood, the way I can walk around a centre, but life is so structured," she saiD."In London, you can be who you want.No one cares."
Answer: A Modern Tale of Two Cities

A: The best title for this message is _ .
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Q: Article: Can software bring dead tongues back to life? Probably yes. A computer algorithm works almost as well as a trained linguist in reconstructing how dead " _ " would have sounded, says a new study. "Our computer system is doing a basic job right now," says Alex Bouchard-Cote, an assistant professor in the department of statistics at the University of British Columbia and lead author of the paper describing the algorithm. But the program does a good enough job that it may be able to give linguists a head start, the statistician added. For centuries, scholars have reconstructed languages by hand: looking at the same word in two or more languages and making educated guesses about what that word's "ancestor" may have sounded like. For example, the Spanish word for man ("hombre") and the French word for man ("homme") developed from the Latin word "homo." The way linguists compare words from descendant languages to reconstruct the parent language is called, appropriately, the comparative method. The early 19th-century linguist Franz Bopp was the first to compare Greek, Latin and Sanskrit using this method. Jacob Grimm, one of the Brothers Grimm of fairy tale fame, used the comparative method to show how Germanic languages developed from a common ancestor. The difference between that and Bouchard-Cote's program, the statistician says, "is we do it on a larger scale." As a proof of concept, Bouchard-Cote fed words from 637 Austronesian languages (spoken in Indonesia, the Philippines, Malaysia and more) into the new algorithm, and the system came up with a list of what the ancestor words of all those languages would have sounded like. In more than 85 percent of cases, the automated reconstruction came within one character of the ancestor word commonly accepted as true by linguists. The algorithm won't replace trained human linguists, but could speed up language analysis. Using a computer to do large-scale reconstruction offers another advantage. Bouchard-Cote says, "With big data sets, you can really start finding regularities ... You might find that certain sounds are more likely to change than others." So Bouchard-Cote's team tested the "functional load hypothesis ," which says that sounds that are more important for two clearly different words are less likely to change over time. A formal test of this hypothesis in 1967 looked at four languages; Bouchard-Cote's algorithm looked at 637. "The revealed pattern would not be obvious if we had not been able to reconstruct large numbers of protolanguages," Bouchard-Cote and his coauthors write in the new study. In addition to simply helping linguists understand how people spoke in the past, studying ancient languages can perhaps answer historical questions. For example, Bouchard-Cote says, "Say people are interested in finding out when Europe was settled. If you can figure out if the language of the settling population had a word for wheel, then you can get some idea of the order in which things occurred, because you would have some records that show you when the wheel was invented."
Answer: allow us to find answers to some historical questions

A: According to Bouchard-Cote, reconstructing the dead "protolanguages" might _ .
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Q: Article: A machine which makes water out of air could become the greatest household invention since the microwave. Using the same technology as a dehumidifier , the Water Mill is able to create a ready supply of drinking water by getting it from a limitless source-the air. The company behind the machine says not only does it offer all alterative to bottled water in developed countries,but it is a solution for the millions who face a daily water shortage. The machine works by drawing in damp air through a filter and over a cooling element which changes it into water droplets.It can produce up to 12 liters a day.The Water Mill will also produce more water when storms pass over, as the humidity in the air increases.In keeping with its ecodevelopment,the machine uses the same amount of electricity as three light bulbs. Inventor Jonathan Ritchey said:"The demand for water is .People are looking for freedom from water distribution systems that are shaky and unreliable". The machine,which is about 3 feet wide,is likely to costPS800 when it goes on sale here in the spring.Its maker, Canadian firm Element Four, estimates that a liter of water will cost around 20 pence to produce. Environmentalists claim half the world's population will face water shortage because of climate change by 2080.One in five humans is said to lack access to safe drinking water. The Water Mill is not effective in areas with below about 30 percent relative humidity, but with average relative humidity in England of more than 70 percent that won't be much of an issue here.
Answer: unlimited source

A:
According to the author, the biggest advantage of the machine is its _ .
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