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: After battling hard times and danger for over nine months, British teenager Mike Perham made history last month as the youngest person to sail solo around the world. The 17-year-old made the record after he cleared the Panama Canal and then sailed through the Caribbean and got home across the Atlantic. Mike is only three months younger than Zac Sunderland, the 17-year-old American boy who had taken the crown as the youngest solo around-the-world sailor in July. The two youngsters met in Cape Town in South Africa as they crossed the globe in different directions. Mike insisted they were not rivals . "No. It's two teenagers going out there, living their dream and having the adventure of a lifetime," he said. Mike may be young, but he is no stranger to sailing adventures. He picked up the hobby at the age of 6 when his father took him out in a small boat on a local lake. Father and son sailed separate boats across the Atlantic when Mike was 14, making him the youngest person to cross that ocean solo. That record gave him the taste for this even greater challenge. On the recent journey, the scariest moment for Mike came when his sailboat was hit by storms in the southern Indian Ocean. "We were picked up by what felt like a 60-foot wave and threw down on our side at 90 degrees," he said. "It felt like I was going right over. Stuff was flying around and I just thought 'Oh no'." At other times, he had to dive into the Pacific and fix problems. He tied himself to the boat, jumped into the water and went to work with a knife in 30-second dives underneath the boat to cut a rope away. Mike said he felt proud that he made his dream come true. "You've got to have confidence in yourself that you will make it," he said.
Answer: A British teenager became the youngest person to sail solo around the world.
Student:
. What's the main idea of the passage?