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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: Former South African President Nelson Mandela who was treated for a recurring lung infection, dies on Dec. 5th, 2013, at the age of 95. People around the world are mourning the loss of the country's first black president. He was often called humble, charming, loyal person and a man who cared about others. "He seemed to have that special charismatic personality," said Herman Cohen, U.S. assistant secretary of state for Africa from 1989 to 1993. "He became the symbol in the fight against _ ." Mandela was born on July 18, 1918. As a young man he became active in the anti-apartheid movement and joined the African National Congress, or ANC, in the 1940s. The white-led government banned the ANC in 1960, but the group continued to operate secretly. Mandela became head of the group's new military wing, coordinating a sabotage campaign against South African military and government targets. In 1962, he was arrested and put on trial for his actions and sentenced to life in prison on Robben Island off the coast of Cape Town. He spent 18 years there, refusing a government offer to release him if he would renounce the ANC's armed struggle. But he was freed in 1990 after South African President Frederik de Klerk legalized all political parties and discharged most political prisoners. Shortly after his release, Mandela was elected president of the African National Congress. And in 1994, when the ANC won South Africa's first all-race elections, he was inaugurated as the county's first black president at age 75. "Never, never and never again shall it be that this beautiful land will again experience the oppression of one by another," he said. President Mandela said he would stay for only one five-year term. Cohen says Mandela earned international respect for South Africa's national reconciliation. "Mandela devoted himself mainly to rallying the Africans to this new era to work on economic development, having good education, also he was very much of a spokesman on the international scene." he said. In 1993, Mandela shared the Nobel Peace Prize with his once bitter enemy F.W. de Klerk for their contribution to the peace process in South Africa. After receiving the award, Mandela praised the South African people. "All have created a society which recognizes that all people are born equal," he said. In a country torn apart by years of racial conflict, Nelson Mandela is considered a remarkable leader -- a man who turned South Africa away from violence and hatred into a country of greater peace and understanding.
Answer: 28 years
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How long was Nelson Mandela sent to prison?

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Article: Below is adapted from an English dictionary. Use the dictionary to answer the following questions. figure / fig@ / noun, verb * noun 1. a number representing a particular amount, especially one given in official information: the trade / sales figures 2. a symbol rather than a word representing one of the numbers between 0 and 9: a six-figure salary 3. (informal) the area of mathematics that deals with adding, multiplying, etc. numbers 4. a person of the type mentioned: Gandhi was both a political and a religious figure in Indian history. 5. the shape of a person seen from a distance or not clearly 6. a person or an animal as shown in art or a story: a wall with five carved figures in it 7. the human shape, considered from the point of view of being attractively thin: doing exercise to improve one's figure 8. a pattern or series of movements performed on ice: figure-skating * be / become a figure of fun: be / become sb. that others laugh at * cut a...figure: sb with a particular appearance: He cut a striking figure in his dinner jacket. * put a figure on sth: to say the exact price or number of sth. * a fine figure of man / woman: a tall, strong-looking and well-shaped person * figure of speech: a word or phrase used in a different way from its usual meanings in order to create a particular mental image or effect * figurehead: someone who is the head or chief in name only (with no real power or authority) * verb 1. to think or decide that sth. will happen or is true: I figured that if I took the night train, I could be in Scotland by morning. 2. to be part of a process, situation, etc. especially an important part: My opinion of the matter didn't seem to figure at all. 3. to calculate an amount or the cost of sth: We figured that attendance at 150,000. * figure in: to include (in a sum): Have you figured in the cost of hotel? * figure on: to plan on; to expect sth. to happen: I haven't figured on his getting home so late. * figure out: to work out; understand by thinking: Have you figured out how much the trip will cost? * It / That figures!: That seems reasonable.
Answer: He was about to speak but she put a figure on his lips to stop him.
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According to the information above, which of the following sentence is not right?

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Article: Below is a selection about interesting hotels. Tayka Hotel de Sal Where: Tahua, Bolivia How much: About $95 a night Why it's cool: You've stayed at hotels made of brick or wood, but salt? That's something few can claim. Tayka Hotel de Sal is made totally of salt-including the beds (though you'll sleep on regular mattresses and blankets). The hotel sits on the Salar de Uyuni, a prehistoric dried-up lake which is the world's biggest salt flat. Builders use the salt from the 4,633-square-mile flat to make the bricks, and glue them together with a paste of wet salt that hardens when it dries. When rain starts to dissolve the hotel, the owners just mix up more salt paste to strengthen the bricks. Green Magic Nature Resort Where: Vythiri, India How much: About $240 a night Why it's cool: Taking a pulley -operated lift 86 feet to your treetop room is just that start of your adventure. As you look out of your open window, there is no glass! You watch monkeys and birds in the rain forest canopy . Later you might test your fear of heights by crossing the handmade rope bridge to the main part of the hotel, or just sit on your bamboo bed and read. You don't even have to come down for breakfast-the hotel will send it up on the pully-drawn "elevator". Dog Bark Park Inn B&B Where: Cottonwood, Idaho How much: $92 a night Why it's cool: This doghouse isn't just for the family pet. Sweet Willy is a 30-foot-dog with guest rooms in his belly. Climb the wooden stairs beside his hind leg to enter the door in his side.You can relax in the main bedroom, go up a few steps of the loft in Willy's head, or hang out inside his nose. Although you have a full private bathroom in your quarters, there is also a toilet in the 12-foot-tall fire hydrant outside. Gamirasu Cave Hotel Where:Ayvali, Turkey How much :Between $130 and $450 a night Why it's cool: Experience what it was like 5,000 years ago, when people lived in these mountain caves formed by volcanic ash. But your stay will be much more modern. Bathrooms and electricity provide what you expect from a modern hotel, and the white volcanic ash, called tufa, keeps the rooms cool in summer. (Don't worry- there is heat in winter.)
Answer: You have to cross a rope bridge to the hotel.
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What do we know about Tayka Hotel de Sal?