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.

[EX Q]: Article: The U.S. government may issue stronger regulations about the use of tobacco. Many governments and private buildings have "No Smoking" regulations. In airplanes, on trains and at cinemas, Golf courses are seriously thinking of keeping out smokers, so are schools, shopping malls and even football fields. So where do people go to fill their lungs with nicotine? The government is working on it. One suggestion is that the government set aside a piece of land somewhere in the United States where smokers could go when they want a cigarette. Yellow Stone Park has been in the list, but many people don't agree because they fear that second-hand smoking would make the bears there sick. The Mojave Desert in California is also being studied, and so are Las Vegas Casinos . The smokers were not too nervous about the government idea. They say they are not going to California just to light up. They have a right to smoke at home. To make life more pleasure for those who find it hard to give up smoking, the government is seriously thinking of getting somewhere for the smokers. The tobacco companies are fighting the idea like mad. They say nobody has proved that cigarettes are bad for you. They say as a matter of fact, the doctors have proved that a cigarette saved a person's life after that person was shot. Other places under consideration are: the cold areas in Alaska, the Rocky Mountain in Colorado and the Whitewater River in Arkansas.
Answer: are not so free
[EX A]: Smokers in the U.S. _ to light a cigarette now.

[EX Q]: Article: In some parts of the United States, farming is easy. But farming has always been difficult in the northeastern corner of the country, which is called New England. New England has many trees and thin, rocky soil. Anyone who has wanted to start a new farm there has had to work very hard. The first job has been cutting down trees. The next job has been digging the stumps of the trees out of the soil. Then the farmer has had the difficult job of removing stones from his land. This work of removing stones never really ends, because every winter more stones appear. They come up through the thin soil from the rocks below. Farmers have to keep removing stones from the fields. Even today, farms which have been worked on for 200 years keep producing more stones. That is why stone walls are used instead of fences around New England fields. The stone walls are not high; a man can easily climb over them. But they keep the farmer's cows from joining his neighbor's cows.
Answer: why there are many stone walls in New England
[EX A]: This selection explains _ .

[EX Q]: Article: A special laboratory at the University of Chicago is busy only at night. It is a dream laboratory where researchers are at work studying dreamers. Their findings have discovered that everyone dreams from three to seven times a night, although in ordinary life a person may remember none or only one of his dreams. While the subjects--usually students--sleep, special machines record their brain waves and eye movements as well as the body movements that signal the end of a dream. Surprisingly, all subjects sleep soundly. Observers report that a person usually fidgets before a dream. Once the dream has started, his body relaxes and his eyes become more active, as if the curtain had gone up on a show. As soon as the machine shows that the dream is over, a buzzer wakens the sleeper. He sits up, records his dream, and goes back to sleep--perhaps to dream some more. Researchers have found that if the dreamer is wakened immediately after his dream, he can usually recall the entire dream. If he is allowed to sleep even five more minutes, his memory of the dream will have disappeared.
Answer: dreamers while they dream
[EX A]:
According to the passage, researchers at the University of Chicago are studying _ .