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.

Q: Article: In the 19thcentury, Americans from the eastern states moved out west to settle in the rich new lands along the Pacific Coast. The most difficult part of their trip was crossing "the Great American Desert" in the western part of the United States by horse and wagon. The western desert can be very dangerous. There is little water and there are few trees. But the desert also has scenery of great beauty. Tall towers of red and yellow stone rise sharply from the flat, sandy valley floor. The scene has been photographed many times and appears in movies and on TV. In Arizona, man-made dams across the Colorado River have made two large lakes in the middle of the dry desert country. At Lake Powell, the red stone arch of Rainbow Bridge rises high above the blue lake. There are few roads. Many areas of Lake Powell's shore can only be reached by boat or on foot. But hikers in this empty desert land sometimes find very old native American pictures, painted on the rocks. In Death Valley, California, the summer temperature rises to 130degF--165degF. There is less than inches of rain each year. Death Valley is the lowest place in America---925 metres below sea level. In the 1800s, many travelers died when they tried to cross this waterless valley in the terrible heat. Although the desert is dry and seems empty, there is plenty of life if you look closely. Snakes and rats have learned how to live in the desert heat. They live underground and come out at night, when it is cool. Plants such as cacti need very little water. When it does rain in the desert (sometimes only once or twice a year), plants grow quickly, and flowers open in a single day. For a short time, the desert is covered with brilliant (very bright) colours.
Answer: wanted to make their home there

A: In the 19thcentury, Americans moved from east to west because they _ .
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Q: Article: Whales live in the ocean, but they are not fish. They are warm-blooded mammals and must have air to breathe. The babies are born alive and drink milk from the mother's body. It took millions of years for the whale to develop as it is today. Every spring groups of whales swim hundreds of kilometers to warm places to bear their young. Each group goes to the same place every year. The mothers take very good care of their babies. The fully grown whales are very gentle and playful with each other, and with humans. They "talk" to each other with a high noise that sounds beautiful. This"talking" can be heard for more than 300 kilometers in open waters. Yet humans kill over a hundred whales a day. They kill them to make whale oils and a lot of other things. Killing them is a modern business with modern machines and even harpoons( ) that explode( ) inside the whales. A whale dies very slowly and in great pain. Some ships kill every whale they can find, even the mothers and babies. Then there are no young whales to grow up or to bear more young.
Answer: whales are fish

A: A commonly mistaken belief is that _ .
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Q: Article: You may have heard some respectable elders say, "It's not what you want in this world, but what you get." Psychology teaches that you do get what you want if you know what you want and want the right things. You can make a mental blueprint of a desire as you would make a blueprint of a house, and each of us is continually making these blueprints in the general routine of everyday living. If we intend to give a dinner for friends, we plan the menu, make a shopping list, and decide which food to cook first, and such planning is essential and necessary for any type of meal to be served. Similarly, you can make a blueprint for your could-be-job, take a sheet of paper, and write a brief account of yourself. In making a blueprint for a job, begin with yourself, for when you know exactly what you have to offer, you can intelligently plan where to sell your service. This account of yourself is actually a description of your working life and should include education, experience and references. Such an account is valuable. It can be referred to filling out standard application blanks and it is extremely helpful in personal interviews. While talking to you, your could-be employer is deciding whether your education, your experience and other qualifications will pay him to employ you, and your abilities must be displayed on an orderly and reasonably connected manner. When you have carefully prepared a blueprint of your abilities and desires, you have something exact to sell. Then you are ready to hunt for a job. Get all the possible information about your could-be job. Make your eyes and ears open, and use your own judgment. Spend a certain amount of time each day seeking in the employment you wish for, and keep in mind: Obtaining a job is your job now!
Answer: it's no use dreaming but be practical

A:
When the elders say, "It's not what you want in the world, but what you get", they mean _ .
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