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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: NEW YORK--Microsoft on Monday made another effort to challenge Apple's iPhone and Google's Android in the exploding smartphone market--launching a wireless operating system,Windows Phone 7. Consumers will consider it"always delightful and thoroughly mine,"Microsoft CEO Steve Ballmer said at a launch event. Ballmer said last year that Microsoft had" _ "with its Windows Mobile operating system.For example,it failed to keep up with touch-screen innovations that make iPhones and Android phones easy to use. Microsoft fell from third to fourth place in market share this year,behind BlackBerry,iPhone and Android. Only 10.8% of smartphone owners used Microsoft's system in August,down from 18% last December. But Windows Phone 7 is"a total departure from anything they've done".Microsoft says it sought to simplify common activities. For example,you can instantly take a picture with a phone's camera by pushing a button on the device. You don't have to first awaken it from its sleep mode and launch the camera application. You also can program the phones to automatically upload photos to Facebook or other social network sites in a couple of seconds. Users can easily work with Microsoft Office contact and calendar information as well as documents created in Microsoft's Word,Excel and PowerPoint. The phones will not show videos built on Adobe's Flash platform,widely used by services including YouTube and Hulu. AT&T will offer the first Windows Phone 7 smartphone,the Samsung Focus,on Nov.8.Soon after,it will have the LG Quantum and HTC Surround. Each will cost S| 199.99 with a two-year service contract. T-Mobile will have two Windows Phone 7 models out for the holiday shopping season:the HTC HD7 and Dell Venue Pro. It did not say how much they'll cost.
Answer: Focus.
Solution:
Which of the following phones will NOT use Windows Phone 7 operating system?