Detailed Instructions: 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.
See one example below:
Problem: 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?
Explanation: In the Article, 10,000,000 is mentioned for the number of books available in the British Library, so this is a good question.

Problem: Article: Fake a book, leave a book. Public bookshelves are appearing across Germany on street corners, city squares and suburban supermarkets. In these free-for-all libraries, people can grab whatever they want to read, and leave behind anything they want for others. There's no need to register, no due date, and you can take or give as many as you want. "This project is aimed at everyone who likes to read regardless of age or education. It is open for everybody," Michael Aubermann, one of the organizers of the free book exchange in the city of Cologne, told The Associated Press. "We installed our other outdoor shelves last year and it's been working really well," said Aubermann, a 44-year-old who works in IT management. The public hook shelves, which are usually financed by donations and cared for by local \ volunteer groups, have appeared independently of each other in many cities across Germany including Berlin, Hannover and Bonn, and also in suburbs and villages. Each shelf holds around 200 books and it lakes about six weeks for a complete turnover, with all the old titles replaced by new ones, he said. While most of the shelves have so far been put up in upscale neighborhoods, Aubermann and the 20 volunteers who help look after the project are planning to put up future shelves in poor neighborhoods, where residents often don't have as much access to literature. So far, the Cologne book group has had few problems .Though a used-book seller once emptied every volume on a shelf to sell at a market. Another time the shelves were filled with material from a religious group. Even commercial book stores and online book retailers seem to support the idea of free book exchanges.
Answer: Public bookshelves spread across Germany.
Solution:
What's the text mainly about?