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.

Example Input: Article: ATLANTA, Georgia--- Alternative medicine --- including yoga, meditation, herbs and the Atkins diet ---appears to be growing in popularity in the United States, perhaps because of dissatisfaction with conventional care, the government said Thursday. More than a third of American adults used such practices in 2002, according to the government survey of 31,000 people, the largest study on non-conventional medical approaches in the United States.If prayer is included, about 62 percent of U.S.adults used some form of alternative medicine. The results seem to indicate more people are turning to alternative medicine, though the 2002 survey could not be directly compared to previous studies because of differences in size and survey methods, health officials said. The top alternative therapies included prayer (43 percent of adults) , natural products(19 percent), meditation(8 percent)and diets such as Atkins, Ornish, or the Zone (4 percent).More people also are using natural products such as herbs or enzymes to treat chronic or recurring pain , said Richard Nahin of the National Center for Complementary and Alternative Medicine, part of the National Institutes of Health. "Many conditions are not easily treated with conventional medicine," Nahin sad. "It may be the public that is turning to complementary and alternative medicine because it's not getting relief from conventional medicine." But people should not be turning away from conventional treatments that are proven safe, said Dr.Stephen Straus, director of the alternative medicine center. "People are making individual decisions to neglect those therapies and we have concerns about those choices," he said. Health officials said they were concerned that 13 percent of those surveyed said they turned to alternative medicine because regular medicine is too expensive. "It needs to be explored ---we need to find out whether they were insured or not" Nahin said. Health officials also were surprised that 6.6 percent of those surveyed used the supplement kava , which has been associated with liver disease. "People make the assumption that because something is natural that it's safe" Nahin said. "But a number of studies have shown that natural products can be unsafe when used inappropriately or with other drugs." He said people considering using alternative medicine should consult their doctor first.
Answer: Alternative medicine becomes more popular
Example Output: Which can be used as the proper title for the passage?

Example Input: Article: If you don't prepare yourself now, retirement may be some of the most boring and dull years of your life. To have a happy, fulfilling retirement, you need to start preparing right away. The most obvious thing for people to do when they retire is to take up a hobby. The most important step to take before retiring, though, is to make sure that you actually have started some hobbies. Once you're retired, unless you 've already started a hobby, you'll find it very hard to get into something new. Some hobbies aren't for everyone. Think about what you enjoy doing and start participating on a casual basis now. Another thing many people participate in is volunteering. Not only does volunteering give you something to do, it also gives you a sense of accomplishment and can add meaning to your life .Volunteering is also rewarding in other ways, too. There are hundreds of different types of volunteer services and you'll always be able to meet new and interesting people. Also, don't think that volunteering is always only about helping someone for free. Many companies pay their volunteers after they've had enough experience and prove themselves to be valuable workers. There are plenty of other potions, as well. Going back to school is a great way to keep yourself feeling young. Taking a vacation around the world with your loved ones is another great way to spend your retirement. Ultimately, though, the key to a happy retirement is simply keeping yourself busy and doing whatever you love. If there's nothing you love doing now, then you'll find that once you have a vast amount of free time, your life will be pretty empty. Now is the time to find out what you want to do when you retire.
Answer: Because we are likely to have difficulty starting a hobby after retirement.
Example Output: Why does the author suggest starting a hobby before retirement?

Example Input: Article: Is this a car? Is it a smart phone? Is it a gaming machine? Yes to all three. The Toyota Fun-Vii is a pleasure palace on wheels. If Toyota has its way, paint jobs could become a thing of the past, because it has introduced an amazing car that can change its whole look in an instant. The Vii in Fun-Vii, which stands for "Vehicle, Interactive, Internet" It is a small three-seater car that looks like a smart phone, so it is called a smart phone on wheels.Inside and out, most aspects of the car can interact with the internet and be controlled by a smart phone.The magical car allows the owners to download pictures from their phones onto the outside, so that the look of the car could be changed instantly.The color inside could also be changed to reflect the owner's mood.Just as the company president Akio Toyoda said, "A car must appeal to our emotions.If it's not fun, it's not a car." Its outside and inside are not made of solid paint but touch screens that can display pictures and videos.A network update function downloads all the latest software to make sure the car is always up-to-date, and it can provide the latest entertainment as well as information about its surroundings to the driver.As you drive around, the thoughtful car allows you to communicate with your friends in the nearby cars.It also helps you find your way from one place to another. It's all because the car is networked with all the other cars on the road and drives itself. The smart car is a practical, family sized vehicle fuelled by hydrogen, and it is one of the futuristic concept cars under the theme of "fun to drive, again".It heralds a not-too-distant future where people, cars and society are linked.
Answer: Smart.
Example Output:
Which of the following may not be a key word for the concept car?