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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: Sports can help you keep fit and get in touch with nature. However, whether you are on the mountains, in the waves, or on the grassland, you should be aware that your sport of choice might have great influence on the environment. ks5u Some sports are resource-hungry. Golf, as you may know, eats up not only large areas of countryside, but also tons of water. Besides, all sorts of chemicals and huge amounts of energy are used to keep its courses in good condition. This causes major environmental effects. For example, in the dry regions of Portugal and Spain, golf is often held responsible for serious water shortage in some local areas. ks5u There are many environment-friendly sport. Power walking is one of them that you could take up today. You don't need any special equipment except a good pair of shoes;and you don't have to worry about resources and your purse. Simple and free, power walking can also keep you fit. If you walk regularly, it will be good for your heart and bones. Experts say that 20 minutes of power walking daily can make you feel less anxious, sleep well and have better weight control. ks5u Whatever sport you take up, you can make it greener by using environment-friendly equipment and buying products made from recycled materials. But the final goal should be "green gyms". They are better replacements for traditional health clubs and modern sports centers. Members of green gyms play sports outdoors, in the countryside or other open spaces. There is no special requirement for you to start your membership. And best of all, it's free. ks5u
Answer: Cycling around a lake. ks5u
answer:
Which of the following is the author most probably in favor of? ks5u

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Article: One of the tough things about being a high school student is that you never seem to get enough sleep at night, which often leaves you nodding off during classes. "The best amount of sleep to get is about seven and a half to eight hours," Peter Venn at Queen Victoria Hospital, UK, told The Telegraph. Spending either less than six or more than nine hours in sleeping puts your health at risk. A popular solution to a lack of sleep at night is to take a "power nap" during the day, but does this work? Generally speaking, it can be beneficial. Research shows that a nap in the middle of the day --even a brief one as short as five or 10 minutes ---can clear your mind and leave you with increased energy and improved productivity , according to Forbes. However, as refreshing as it might be, if you are getting adequate sleep at night, taking a power nap isn't such a wise choice. The reason is that sleeping during the day can interfere with your body's biorhythms . The brain gets used to going to bed at roughly the same time each night and getting up at the same time each day, and you don't want to disturb this routine. One more thing to keep in mind is that a power nap should never be used as a replacement for a good night's sleep. "Twenty minutes of power nap during the day is not like a tablet which will definitely work," Rahul Mukherjee, an Indian sleep specialist, told The Telegraph. "An hour's sleep before midnight is worth a couple of hours' sleep after midnight."
Answer: About seven and a half to eight hours.
answer:
What is the healthiest amount of sleep for the majority of people according to the article?

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Article: Have you ever used Facebook? Many people are being lured onto it with the promise of a fun,free service without realizing they're paying for it by giving up large amounts of personal information.Facebook then attempts to make money by selling their data to advertisers that want to send targeted messages. Most Facebook users don't realize this is happening.Even if they know what the company is up to,they still have no idea what they're paying for Facebook because people don't really know what their personal data is worth. The biggest problem,however,is that the company keeps changing the rules.Early on,you keep everything private.That was the great thing about Facebook -- you could create your own little private network.Last year,the company changed its privacy rules so that many things -- your city,your photo,your friends' names--were set,by default to be shared with everyone on the Internet. According to Facebook's vice-president Elliot Schrage,the company is simply making changes to improve its service,and if people don't share information,they have a "less satisfying experience". Some critics think this is more about Facebook looking to make more money.Its original business model,which involved selling ads and putting them at the side of the page,totally failed.Who wants to look at ads when they're online connecting with their friends? The privacy issue has already landed Facebook in hot water in Washington.In April,Senator Charles Schumer called on Facebook to change its privacy policy.He also urged the Federal Trade Commission to set guidelines for social-networking sites."I think the senator rightly communicated that we had not been clear about what the new products were and how people could choose to use them or not to use them," Schrage admits. I suspect that whatever Facebook has done so far to invade our privacy is only the beginning,which is why I'm considering deactivating my account.Facebook is a handy site,but I'm upset by the idea that my information is in the hands of people I don't know.That's too high a price to pay.
Answer: They don't know their personal data enriches Facebook.
answer:
What does the author say about most Facebook users?