Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following example:
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?
Reason: In the Article, 10,000,000 is mentioned for the number of books available in the British Library, so this is a good question.

Now, solve this instance: Article: Why do we dream?It's a question researchers have been studying for years. Now new research suggests that some dreams may result from the brain's effort to keep learning, even as we sleep. In a study in Boston, 100 volunteers were trained for an hour on a maze .They tried to find their way through the difficult puzzle as quickly as possible. Then half of the volunteers were allowed to sleep for 90 minutes. The other half stayed awake, reading or relaxing. The ones who slept were asked to describe their dreams when they woke up. After the rest, the volunteers were asked again to solve the maze. Those who hadn't slept showed no improvement or did even worse after the break. Sleepers who didn't report any maze related dreams did better but showed only a little improvement. However, four nap-takers who reported dreaming about the maze showed a surprising improvement. They scored 10 times higher after sleeping and dreaming about the maze. Even though the number of dreamers was small, the researchers noted that the gap in learning between the dreamers and non-dreamers was so wide that the finding was significant . The dreamers had all performed poorly on the test before dreaming about it. That suggests that struggling with a task might be the _ that leads the sleeping brain to focus on it and work on how to deal with it. "It's almost as if your brain is going through everything that happened today,"Dr Stickgold,a scientist at Harvard Medical School, said. "The things you're obsessed with are the ones that your brain forces you to continue to do with."
Answer: Learning while you dream
Student:
What's the best title for this passage?