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: When Luca first heard of the Island of Inventions, he was still very young. But its wonders sounded so incredible that they were forever burned in his memory. From that moment, he never stopped searching for clues which might lead him to the island. He read hundreds of adventure books, histories, volumes of physics and chemistry, even music. Over time, he pieced together his idea of what the Island of Inventions was like. It was a secret place, where all the great wise men of the world would meet to learn and invent together. Access to the island was totally restricted. To join, you had to have created some great invention for humanity. Only then could you receive the special invitation -- which came with directions to the island. So Luca spent his youth studying and inventing. Every new idea he got, he made it into an invention, and if there were something he didn't understand, he'd seek others to help him. Soon he met other young inventors and he told them about the Island of Inventions. They too dreamed of one day receiving an invitation letter. As years passed, the disappointment of not receiving their invitation made Luca and his friends work harder and co-operate more. They would meet in Luca's house, share their ideas and build new machines. Their inventions became known throughout the world, and improved the lives of millions. But still, no invitation came. They didn't lose heart. They continued learning and inventing every day, trying to come up with more and better ideas. Fresh young talent joined their group, as more inventors dreamed of getting to the island. One day many years later, Luca, already very old, was speaking with a brilliant young man named Roberts, who had written to him, asking him to join the group. Luca started telling the man of the wonderful Island of Inventions, and of how he was sure that some day they would receive an invitation. Surprised, the young inventor interrupted: "You mean this place isn't the Island of Inventions? Isn't the letter you sent me the real invitation?" It was only then that Luca realised that his dream had become true in his very own house. No island could exist which would be better than where he was now. No place of invention would be better than what he and his friends had created. Luca felt happy to know that he had always been on the island, and that his life of invention and study had been a truly happy one.
Answer: The island was not a real place.
Solution:
Why did Luca and his colleagues probably never receive an invitation to the island?