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.

Example input: 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.
Example output: How many books are there in the British Library?
Example 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.
Q: Article: The longest solar eclipse of the century cast a wide shadow for several minutes over Asia and the Pacific Ocean on 22th July, drawing people outside to watch the sight in the sky. Day turned into night. Temperature turned cooler in cities and villages filled with fans of astronomy. The total eclipse could be seen starting in India on Wednesday morning and moving eastward across China and parts of the Pacific. Millions cast their eyes towards the heavens to catch an unusual view of the sun's colorful ring. Cloud in some areas prevented people from fully enjoying the sight. Still, many were frightened. The total eclipse occurs about twice a year as the moon passes between the earth and the sun on the same plane as earth's circle. The local astronomy society gave a flash on how an eclipse happens. Wednesday's event lasted up to more than six minutes in some places. In India, thousands bathed in the Ganges River in the Hindu holy city of Varanasi to clean their souls. It was sunny sky in Hong Kong for the eclipse, where students, parents and the elderly flooded in a primary school to watch. In Shanghai, children climbed up ladders to look through two large telescopes on the school roof to catch sight of the moon moving across the sun. Others looked through a pair of glasses covered with solar filter paper, where they could take pictures of the moon moving over the sun. In some cultures, many old stories are about eclipse. In India, a eclipse was considered unfavorable. In Chinese tradition, there is a story about a heavenly dog eating the sun. As the story goes, people would make noise to frighten off the dog and save the sun.
Answer: Not everyone in the world could see the longest eclipse.
A:
What can we learn about the longest solar eclipse of the century?