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 rising sea waters caused by global warming have inspired a Russian architect to design a hotel that could be built on water as well as land.The eco-friendly "Ark" could be constructed in just a few months anywhere in the world, the designer says. It's called "The Ark",but looks more like a ship sitting upside down on the water.A new design by Russian architect A1exander Remizov challenges the tradition of land-based hotel and would provide a shelter in the future--should the world face a modern-day flood as described in the Bible. The building of the hotel could be fast and simple."Prefabricated section could be put together in three to four months," Remizov said. The versatile structure could be constructed in most corners of the earth, even in earthquake-prone areas.Constructing "The Ark"--which would include 14 000 square meters of living space---would cost roughly the same as building an energy-efficient house. The self-supporting structure would be built around a central post, connecting wind generators and heat pumps on its roof with the basement,where solar,wind,and thermal energy could be stored and turned into electricity. Remizov has designed the building without glass,choosing instead the lasting and self-cleaning foil that could defend itself against rough weather conditions.That foil would be fastened to metals,which would also collect rainwater.The building would also feature an indoor jungle, creating its microclimate.
Answer: To attract more tourists.
A:
What's the purpose of designing "The Ark,?"