In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.

Article: A car that runs on coffee is unveiled(shown to the public for the first time)today but at between 25 and 50 times the cost of running a car on petrol, the invention won't please any motor industry accountants. Nicknamed the Car-puccino, it has been created using a 1988 Volkswagen Scirocco bought for PS400 and it was chosen because it looked like the time-traveling DeLorean in the movieBack To The Future.The car will be driven the 210 miles between Manchester and London powered only by roasted coffee granules .It has been built by a team from the BBC1 science programme Bang Goes The Theory and will go on display at the Big Bang science fair in Manchester to show how fuels other than traditional petrol can power vehicles. The team calculates the Car-puccino will do three miles per kilo of ground coffee -- about 56 cups of espressos per mile.The journey will use about 70 kilos of ground coffee which, at supermarket prices of between PS13 and PS26 a kilo depending on brand and quality, will cost between PS910 and PS1,820, or between 25 and 50 times the PS36 cost of petrol for the journey.In total, the trip will cost 11,760 espressos, and the team will have to take 'coffee breaks' roughly every 30 to 45 miles to pour in more granules.They will also have to stop about every 60 miles to clean out the 'coffee filters' to rid them of the soot and tar which is also generated by the process.So despite a top speed of 60mph, the many stops mean the going will be slow, with the journey taking around ten hours. Sadly, the inventors will still have to pay duty on their coffee fuel---even though tax collectors at Her Majesty's Revenue and Custom haven't yet worked out how much. Nick Watson, producer of Bang Goes The Theory, said, "Coffee, like wood or coal, has some carbon content so you can use it as a fuel.The coffee needs to be very dry and in granules to allow the air to move through the pile of coffee as it burns.The brand doesn't matter." He said the same technology could be used to power a car on other unusual fuels, such as woodchips or nut shells, construction or agricultural waste.
Answer: It should be very dry.
Which is the right way to choose the coffee used as fuels to run the Car-puccino?

Article: Charles Dickens was one of the most beloved storytellers in the English language. His novels made him famous in his own time, and continue as classics in ours. Dickens began his literary career with almost no formal education. He was born in Landport, on Feb. 7, 1812, the second of eight children. When he was 12, his father was sent to debtor's prison. Dickens was forced to quit school and work in a London blacking factory. He would rework that terrible experience into his fiction for the rest of his life. "He was a social reformer," says actor Simon Callow, author of a new biography called Charles Dickens and the Great Theatre of the World. "He knew what poverty was. He knew what it was to be rejected, to be cast aside, to live in squalor ." And so Dickens wrote with great sympathy for the suffering of innocent and vulnerable children - characters like David Copperfield, Little Dorrit and the orphan, Oliver Twist: With his slice of bread in his hand, and his little brown parish cap on his head, Oliver was now led away from the wretched home, where one kind word or look never lighted the gloom of his infant days. Yet he burst into an agony of childish grief as the cottage gate closed after him. Wretched as were the little companions in,misery he was now leaving behind him, they were the only friends he had ever had. His first book Sketches by Boz came out in 1836. With the appearance of Oliver Twist in London periodicals in 1837, the 25-year-old Dickens became the most popular writer in England. But his first love was theater, and he considered becoming an actor. "When he was actually writing, he became his characters," says Peter Ackroyd, author of Dickens: Public Life and Private Passion. "He would get up from his desk, go over to the mirror and mouth the words - do the expressions, grimaces , whatever, and then laugh, chuckle to himself, then go back to his desk and write it down." Dickens created 989 named characters, which increased his popularity. Every one of his major works has been adapted for either stage or screen. A Christmas Carol inspired more than a dozen films, from Alistair Sims' Scrooge in 1951 to Jim Carrey's voicing of the same character in Disney's 2009, 3-D animated film. The original 1843 manuscript of A Christmas Carolis on display at the Morgan Library. Dickens wrote everything by hand, in tiny script, with a quill pen. Remarkably, the manuscript is both the first and the final draft, says Kiely, the curator. You can see where Dickens has changed the name of the first chapter from "Old Marley's Ghost" to "Marley's Ghost". Further down the page, he has canceled an entire section. "He realizes he's not writing a novel, and he only has a very short time in which to write this," Kiely explains. "He's got to keep it tight, in order for it to be published in time for Christmas." Dickens wrote all the time. He traveled with a portable inkwell and a supply of quill pens. He was working on his last novel, Our Mutual Friend, en route from France to London when the train he was on crashed. Dickens died five years later in 1870, after a stroke at age 58. As a comic talent and a social reformer, Dickens' achievement was extraordinary, says novelist T.C. Boyle, who eamed a doctorate in Victorian literature. "He achieved what any great artist achieves - a body of work that has entertained and delighted and instructed people down through the ages. That's what we all hope for," says Boyle. But Dickens' greatest fiction was his own character, says Callow, the biographer: "People think of him as a cheerful man ... but he was increasingly suffering from depression and a sense of hopelessness. And that's worth knowing. I think it's always good to know that great creative individuals have their struggle, their drama."
Answer: His childhood sufferings.
What can probably be reflected in Dickens' works?

Article: Outdoor air pollution leads to more than 3 million premature deaths each year, and more than two thirds of them occur in China and India, according to new research. The authors estimate that without government intervention, the total number of deaths could double by 2050. The study, published in the journal Nature, identifies particulate matter as the prime pollutant leading to premature mortality. Particulate matter, a substance formed as a combination of different materials released into the air, is thought to be harmful to human health once it exceeds 2.5 micrometers in diameter. Researchers also identified ozone as a contributor to dangerous air quality. The causes of air pollution vary dramatically from place to place. In India and China, the study says, emissions from residential heating and cooking drive air pollution by creating unhealthy quantities of smoke. Overall, residential heating emissions cause one third of air pollution-related deaths worldwide. In highly regulated areas, like the United States, Europe and Japan, emissions from agriculture tend to be primary contributors to air pollution. Fertilizer used in agriculture releases ammonia into the atmosphere, a process that creates harmful particulate matter. Globally, air pollution from agriculture kills more than 600,000 people annually, the study finds. The findings are consistent with a 2014 report from the World Health Organization that suggested that 7 million deaths occur annually due to both indoor and outdoor air pollution. The study's conclusions give a sense of urgency to efforts to reduce air pollution but present challenges because of difficulty regulating heating activity in people's homes, according to study author Jos Lelieveld. People who live in the most affected areas should be provided with information about less toxic heating methods, he said. "It's important to reduce emissions from residential energy use," Lelieveld said on a conference call for journalists. "You can't ask people to stop eating and cooking, but you can provide better technologies." Air pollution contributes to a variety of ailments that eventually lead to premature mortality like lung cancer, stroke and heart failure, according to the study. Another study published this week in the journal Environmental Health Perspectives reached similar conclusions showing the devastating effects of pollution on individual health. Researchers found that chronic exposure to particulate matter increases the chance of early death by 3%. That risk is especially high for heart disease; the chance a person will die of heart disease increases by around 10% with chronic exposure to particulate matter. Researchers found that the number of deaths is expected to double by 2050 without new government policies. Nearly all of the increase will occur in Asia, according to the report.
Answer: Residential heating emissions cause two thirds of air pollution-related deaths worldwide.
Which of the following is NOT true?