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.

[Q]: Article: Air traffic controllers in the US have been advised to take 26-minute naps , after a series of accidents involving workers falling asleep. Now the National Transportation Safety Board (NTSB) is calling for "controlled naps" during nightshifts . NTSB member Mark Rosekind said that a 26-minute nap would improve performance by 34%. He believes that beyond the aviation industry, other professions, such as motoring and machinery, also carry obvious risks. But other experts doubt whether 26 minutes is the appropriate napping time. It's a bit too long and risks you falling into a deep sleep, says Jim Horne, director of the Sleep Research Council. He said, "A nap of about 15 minutes is best; once you get beyond 20 minutes, you risk a deep sleep and you can be much more tired when you wake up. Therefore, we suggest that a nap be combined with a cup of coffee so that you can enjoy an effective sleep before the caffeine takes effect in 20 minutes. However, this method only works on those who have had a poor night's sleep. If you haven't had a sleep the night before, this method won't be enough to make you fresh." Health writer, Linda Wasmer Andrews, also believes that 26 minutes is too long. She says a nap between 10 and 20 minutes is enough, and the timing of the nap is also important. Putting your head down too early means your body may not be ready to sleep yet, but a nap that is too late in a day might make it harder to fall asleep. Early afternoon is often the best time, between l pm to 3pm, when people experience a post-lunch decrease in energy.
Answer: How long a nap should last.
[A]: What does the text mainly talk about?

[Q]: Article: For the Travel section, writers and editors selected special items to profile from a dozen cities. Brussels: Chocolate. Nearly half the chocolate consumed in the world is eaten in Europe, and Belgium--with average consumption of 14.99 pounds per person a year--certainly covers its fair share. While Brussels, the country's capital, is home to hundreds of chocolate makers, what makes a visit necessary is the rich heritage of traditional chocolate makers. Budapest: Paprika The job of preparing Hungarian paprika was once considered too dangerous for mothers to do. A woman who touched her children upon returning from work risked burning them, so only the elderly and unmarried were allowed the delicate task of separating the skin from the flesh. But by the early 20thcentury, sweeter varieties and a machine turned paprika into a common feature of all Hungarian cuisine. Lisbon: Tiles Is there a bluer country than Portugal? The blue sky and Atlantic Ocean embrace the land. The blue moods of Fado, the dark folk music, form the national soundtrack. And all across Portugal, the typically--blue designs of azulejos--ceramic tiles--are spread across churches, castles, palaces, university halls, parks. The result is a beautiful land of Christian saints, Portuguese kings, historical glories, aristocrats at leisure, seascapes and so on. Madrid: Guitars Walking into one the Madrid's storied guitar makers' workshops can feel like stepping into the past. Curly wood shavings, from the palest pine to ebony, fall onto the floor as artisans turn some humble wood into works of art. It's painstaking work--all done by hand--with classical guitar models and the methods of making them changing little over the last century.
Answer: The hot level of Hungarian peppers.
[A]: What does the job of preparing Hungarian paprika suggest?

[Q]: Article: Writer: Ralph Ellison Novel : Invisible Man Invisible Man is Ellison's best known work, most likely because it was the only novel he ever published during his lifetime and because it won him the National Book Award in 1953. Ellison, originally from Oklahoma worked hard to match his earlier success but felt that he could not make any progress on his next novel that eventually came to include well over 2000 pages. It was not until Ellison's death that this novel was condensed ,edited and published under the title Juneteenth. Writer: Margaret Mitchell Novel: Gone with the wind Margaret Mitchell, born in Georgia, never wanted to seek out literary success and wrote this expansive work in secret, only sending to publishers after she was mocked by a colleague who didn't believe she was capable of writing a novel. She turned out to be more than capable, and the book won a Pulitzer Prize and was adapted into one of the best-known and loved films of all time. Mitchell would not get a chance to write another novel, as she was struck and killed by a car on her way to the cinema at only 49 years of age. Writer: Anna Sewell Novel: Black Beauty Sewell didn't start off her life intending to be a novelist, she didn't begin writing Black Beauty until she was 51 years old, motivated by the need to create a work that encouraged people to treat horses ( and humans) humanely and it took her six years to complete it. Upon publication it was an immediate bestseller, rocketing Sewell into success. Unfortunately, she would not live to enjoy but a little of it as she died of hepatitis five months after her book was released.
Answer: Gone with the Wind
[A]:
Which novel has been adapted into one of the most successful films?