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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.
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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.
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Which is the right way to choose the coffee used as fuels to run the Car-puccino?

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Article: The language used by scientists to explain complex ideas can be difficult and sometimes even boring. The language, with its Latin words and long scientific terms, could be one reason some people avoid learning about science, especially children. American Danielle Dixson is a marine biologist. She wants to make science fun for children. Dixson has turned that idea into a series of children's books. The nine books are written so that her research is easy to understand. "I just don't really think kids should be left out of it and I thought that story books may be one of the easiest ways to sort of captivate them and have them understand." Danielle Dixson is an assistant professor at the University of Delaware. Dixson says another goal of her science writing is to help increase understanding of the ocean environment. She spent almost two years in the South Pacific working on her post-doctoral research. She went to the island nation of Fiji to investigate coral reefs that are collapsing or, as she says, degrading. The goal of her research is to identify why some healthy coral reefs are breaking down. She also wants to find out how this degradation affects fish that live in and around the reefs. "A number of the reefs are converting from being, you know, these beautiful coral reef systems that have a lot of holes for animals to hide in, into reefs that the coral's degrading and collapsing and then there is not as much hiding spaces for fishes and things like that." Early in her research, Dixson made some videos for people in Fiji. The videos explained her work to the local community. She says she wanted them to understand how her research would help them. For the local children, Dixson started making books explaining her work. This helped to keep them from walking through her "laboratory" - baby pools filled with water she was using for her experiments. "I was living, actually, in the village with some of the locals. It was a lot easier to get research done if they understood what I was doing and how it would help them. And one of the ways that I was able to connect with the adults was I would make these videos for them. And then I started making children's books for the kids so that they would have a better idea of why I was there, so that when I ask them not to walk through the baby pools I was using for experiments or something like that, that that would actually happen." she added. When Dixson returned to the United States, she started doing the same thing for children in this country. She uses color1ful story books to capture the imagination of children. While she has their attention, she provides very useful information about science. As a marine scientist, Dixson wants her stories to be both educational and inspirational, serving as an agent for change. She also includes in her books "a call to action," asking readers what they can do to make a difference. "One of the things I do in those story books is I have a last page. And the last page talks about what you can do to help. You know, there is a lot of things that even a 6-year-old is able to do, whether it's shutting your lights off when you leave a room, or riding your bike to your friend's house instead of having your parents drive you. There is a lot of stuff that they can do and still feel they're making a difference." Danielle Dixson's books shine a light on the environmental problems facing our world's oceans. They also make science fun and understandable for children. But her books may have an unintended consequence, something she may not have planned on.
Answer: People don't need to understand science at all.
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What may lead to people's negative attitude toward science learning?

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Article: The boys crowded in two teams at the front of Charlene Skinner's class as they thought over the math problem that flashed on the whiteboard. "That's not right," one boy said. "It says find the slope," another boy said, instructing his classmates. Next door, in Room A114, the girls spent five minutes in Justin Anderson's science class writing down everything they know about DNA. When the assigned time was up, Anderson asked the students to share some of what they noted down. "Nobody's DNA is alike," one girl said after raising her hand. "You get it from your parents," said another. This is how some lessons are taught at James Gholson Middle School in Prince George's County: boys in one classroom, girls in another. Advocates argue that separating boys and girls removes distractions and sex prejudice in the classroom, taking the lead from expensive private schools and boarding schools that have relied on single-sex learning for generations. But opponents say there is little evidence that such separation works, that it can be discriminatory and that it doesn't properly prepare students for a world that is mixed. Some experts say single-sex classes can break down sex stereotypes , create opportunities for students and improve test scores. Kathy Couture, an education professor at Stetson University in Florida and a board member of the National Association for Single Sex Public Education, said students tend to be more focused on their curriculum and less concerned about impressing or getting attention from the opposite sex. She said girls tend to "dumb themselves down for boys" when they are together in math and science classes. But a report published last week by the Psychological Bulletin -- which reviewed 184 studies to compare the outcomes of learning in single-sex and mixed classrooms -- raised questions about whether there are any real advantages to single-sex classrooms. Janet Hyde, one of the report's co-authors, said there was no evidence to support the argument that boys do better orally or that girls improve in math and science when in single-sex settings. What is more important is that separating students might not adequately prepare them for college and careers. "One of the major purposes of school is to prepare students for the adult world, and that world is mixed," Janet Hyde said. "I think we do harm to students by not preparing them for the adult world."
Answer: Because students may be more concentrated in single-sex classes.
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Why does James Gholson Middle School teach students separately?