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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: As a little boy I read a book with a picture showing a man reading while floating in the Dead Sea. What a miracle! How would it feel to lie back in water so thick with salt that it was impossible to sink? Fed by the Jordan River and smaller streams, the Dead Sea is the lowest point on the earth's surface, and its water is ten times saltier than the Mediterranean. As evaporation is its only outlet, salt and other minerals become super-concentrated. Earlier this year, I drove down the long, steep hill to realize my dream. The shoreline was a broad area of bare salt-mud, but the water edge was out of sight. It seemed as if somebody had pulled the Dead Sea's plug . Eli Dior, an Israeli official, explained the problem "The Dead Sea is drying up. Every year, the surface falls about one meter, and as the water level falls, shallow areas are left high and dry." Over the last half-century, the five neighboring countries have used up almost all the water flowing into the Dead Sea to meet human and agriculture needs. Result the Dead Sea is being emptied. With population in the neighbouring countries to double at least in the next 50 years, there is little hope of restoring the water being used in this area. No country has a drop to spare for the Dead Sea, where they know it will just evaporate. To dream of opening the dams and restoring natural balance is unrealistic. Yet one ambitious high-tech dream may turn out to be not only the solution to the Dead Sea but also a ticket to peace around its shores. The "Red-Dead" is a proposed $5 billion project to bring sea water some 240 kilometers by pipeline and canal from the Red Sea to the Dead Sea. The Red-Dead may be the only solution, but even if the project is carried out successfully, the Dead Sea will be 10 to 20 meters lower than now and two thirds of its current size. Whatever the future holds, the Dead Sea's magical mix of sun, mud, sea and salt will surely survive. Many might complain that the Dead Sea is half empty--but for me the Dead sea will always be half full.
Answer: Why the Dead Sea is so salty.
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What's the passage mainly about ?

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Article: A new collection of photos brings an unsuccessful Antarctic voyage back to life. Frank Hurley's pictures would be outstanding----undoubtedly first-rate photo-journalism---if they had been made last week. In fact, they were shot from 1914 through 1916, most of them after a disastrous shipwreck , by a cameraman who had no reasonable expectation of survival. Many of the images were stored in an ice chest, under freezing water, in the damaged wooden ship. The ship was the Endurance, a small, tight, Norwegian-built three-master that was intended to take Sir Ernest Shackleton and a small crew of seamen and scientists, 27 men in all, to the southernmost shore of Antarctica's Weddell Sea. From that point Shackleton wanted to force a passage by dog sled across the continent. The journey was intended to achieve more than what Captain Robert Falcon Scott had done. Captain Scott had reached the South Pole early in 1912 but had died with his four companions on the march back. As writer Caroline Alexander makes clear in her forceful and well-researched story The Endurance, adventuring was even then a thoroughly commercial effort. Scott's last journey, completed as be lay in a tent dying of cold and hunger, caught the world's imagination, and a film made in his honor drew crowds. Shackleton, a onetime British merchant-navy officer who had got to within 100 miles of the South Pole in 1908, started a business before his 1914 voyage to make money from movie and still photography. Frank Hurley, a confident and gifted Australian photographer who knew the Antarctic, was hired to make the images, most of which have never before been published.
Answer: They recorded a disastrous adventure
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What do we know about the photos taken by Hurley?

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Article: We all waste food, you and me, every day, millions of tons of it.In China, enough food is wasted in restaurants every year to feed 200 million people.And the amount of food wasted by Chinese consumers is increasing fast.So our nation is being encouraged to stop wasting food. So what should Chinese consumers do to prevent food waste? Keep a kitchen diary All of us should keep a kitchen diary, and we can know that how much food we waste at home.The first thing for us to do is to stop throwing away food that we can still eat.We should eat everything we buy and if we cannot, we should buy less. Buy only what we need We should ask for smaller portions in stores.We should also check how much food we have before buying more.We shouldn't bring much food we don't need home even if large posters ask us to do so. Develop the habit of packing food Chinese consumers are generous and friendly.In restaurants, often too much food is ordered and served.So when ordering out, we are supposed to exclude the food in the order if we don't plan to eat it.And order smaller servings in restaurants and take home what we cannot finish. Don't put it off! Let's stop food waste today!
Answer: Because it's traditional to invite friends to dinner in China.
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Why is our nation being encouraged to stop wasting food?