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In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.
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Article: A person who is deaf when he is born is usually dumb as well. There may be nothing wrong with his mouth and tongue, but he cannot speak. This is because he cannot hear people, so he has nothing to imitate . He may try to make sounds himself, but cannot hear his own voice. However, even though he finds it difficult to speak and cannot hear, he can learn to read. Nowadays such persons can also be taught to speak because we have modern methods and equipment, but we did not have these when Helen Keller was born. Even with modern methods and equipment, however, it is not easy for deaf children to learn to speak, though most of them succeed. When a child is deaf and blind as well, it becomes much more difficult, though it is possible. Helen Keller was born in 1880. She became very ill at the age of nineteen months. Medical knowledge was not as great then as it is now. She did not die but lost her sight and hearing. As a result, she became dumb as well. Her parents did their best to teach her, but she couldn't speak by the age of six. Then, in 1887, a teacher, Miss Sullivan, came to live with her. Miss Sullivan herself had been blind. She had been partly cured. Though she could not see very well, she was not blind. Helen was a difficult pupil at first, but in a month Helen had learned how to understand signs and how to make them herself. At last in spite of her great difficulties, Helen learned to read, write and speak, even though she was deaf and blind. She even went to college and had full education. She wrote many books, and though other people have written books about her, her own books are the ones that best explain how it feels to be deaf, dumb and blind. Her best book is The Story of My Life. Perhaps you have read it. Though it was written in 1902, it is still a very interesting book. Even if you have not read it, you may have heard of Helen Keller.
Answer: he cannot hear other people and he has nothing to imitate
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A person who is deaf at birth is also dumb because _ .

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Article: Let's pretend we're sailing down the Rhine River on a pleasure boat. The Rhine is one of the main waterways of Germany, and the river traffic is heavy. It's interesting to watch the many boats going up and down the river. But the river traffic is not nearly so interesting as the beautiful scenery along the banks and hillsides. The boat is passing many old castles. We can see people working in the vineyards on the hillsides. There are vineyards as far as the eye can see. Wine from the Rhine Valley is famous all over the world. Suddenly our boat slows down and begins to turn a little. We are coming to a sharp bend in the river. On our right we can see a rocky cliff over 400 feet high. At first it looks quite ordinary, but there is nothing ordinary about it. There are many stories, poems, and songs about the cliff. We are looking at the Lorelei. Then someone on the boat begins to sing in German, the song of the Lorelei. It is a song about a beautiful siren who has lured many sailors to their deaths. The siren is supposed to sit on the rock combing her long golden hair and singing. The sailors who hear her forget to steer , and the current of river hurls their boats on the rocks and dashes them to pieces. Soon other people on the boat begin to sing. The beautiful song adds to special magic to the moment, and you begin to realize why so many people have made this trip down the Rhine to see the rock of the Lorelei.
Answer: to see the beautiful scene along the banks and hillsides
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The most interesting thing to those who are sailing down the Rhine River on a pleasure boat is _ .

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Article: Isabella Stewart was born in New York City in 1 840.Her father made a great deal of money in the trade.During school,her parents took her to Italy to explore the country's many cultural treasures. One of the private art collections Isabella visited in Milan had a deep influence on her.She wrote to her friends about her dream of owning a house one day with an art collection like the one she had seen in Italy. In Paris,Isabella became close friends with one of her classmates,Julia Gardner,whose family was from Boston.Julia would later introduce Isabella to her brother,Jack.In 1 860,Isabella Stewart married Jack Gardner. The couple had too much art to fit inside their home.So they decided to start planning a museum.Mrs. Gardner didn't like the cold and empty.spaces of many museums during her time.She wanted a warm museum filled with light.She once said that she decided years ago that the greatest need in her country was art.America was a young country developing quickly in other areas.But the country needed more chances for people to See beautiful examples of art. After her husband's death in 1 898.Isabella knew she had no time to lose in building her museum.She bought land,hired a building designer,and supervised every detail of her museum's construction. Mrs.Gardner opened her museum on January 1,1 903,which was then called Fenway Court.She invited her friends that night for a special musical performance.The next month,she opened the museum to the public.At first,visits were limited to twenty days out of the year.Visitors paid one dollar to enter. Isabella Stewart Gardner died in 1 924 in Boston.In her will,she left the museum a million dollars and a series of requirements about how it should be managed, one that the permanent collection cannot be changed.
Answer: Isabella Stewart Gardner and her museum
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The text is mainly about_.