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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.

Article: There are a lot of public libraries in Britain. These libraries have more than one hundred and fifteen million books, not including those libraries of public schools. Public libraries not only lend books, music records but also help children, patients in hospitals and others to get special play readings, film shows and so on. The first public libraries were founded in about the year 1850. Today's public libraries usually have a reading-room, a lending room and a reference room. The greatest and most famous library in Britain is that of the British Library in London. It was founded in 1973 and has over 10, 000, 000 books. It has nearly every magazine, newspaper and book published in Britain and other parts across the world. 
 Answer: 10,000,000 or less.
Solution: How many books are there in the British Library?
Why? In the Article, 10,000,000 is mentioned for the number of books available in the British Library, so this is a good question.

New input: Article: Snapshots, the new fashion for an artistic portrait   photo: Take it underwater. Zhang Xiaomei, a 20 something Shanghai native who works in the media industry, tried it out twice. "It was a completely different experience," says Zhang of her first such experience last May. "You get the feeling that you're cut off from the rest of the world. But also it s romantic and like a fairy tale." She then successfully convinced her husband to be to have their wedding photos taken underwater a couple of months after her first try. "Can you imagine a 1.87-meter-tall man trying out something like a fishtail under the water?" Zhang says, laughing. A commercial underwater photo portrait is perfect for post 80 and post 90 generations who adore taking snapshots, but are looking for new ways to be artistic, says Ai Cheng, owner and photographer of No.55 Underwater Photography in Shanghai. Ai opened a studio in Shanghai's suburb of Songjiang two years ago, building a 5-meter- deep, fan-shaped pool equipped with heating facilities to start up the business. A 30-minute training on how to smile under the water so that you won't drink too much water and how to open your eyes underwater is offered in his studio for those who don't know how to swim. Ai says most of his customers are female--half of them coming for an artistic portrait photo and the rest for wedding pictures. "Some of them drag their boyfriends or husband-to-be, who are unwilling to go down to the water, to shoot as well," he says. 
 Answer: The Best Smiles May Be All Wet.
Solution:
What would be the best title for the text?