Given the task definition, example input & output, solve the new input case.
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: 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.
Output: How many books are there in the British Library?
In the Article, 10,000,000 is mentioned for the number of books available in the British Library, so this is a good question.

New input case for you: Article: A group of graduates, successful in their careers, got together to visit their old university professor. Conversation soon turned into complaints about stress in work and life. Before offering his guests coffee, the professor went to the kitchen and returned with a large pot of coffee and a variety of cups--porcelain, plastic, glass, crystal, some plain looking and cheap, some exquisite and expensive--telling them to help themselves to the coffee. When all the students had a cup of coffee in hand, the professor said: "If you noticed, all the nice looking expensive cups were taken up, leaving behind the plain and cheap ones. While it is normal for you to want only the best for yourselves, that is the source of your problems and stress. Be assured that the cup itself adds no quality to the coffee. In most cases it is just more expensive and in some cases even hides what we drink. What all of you really wanted was coffee, not the cup, but you consciously went for the best cups... And then you began eyeing each other's cups. Now consider this: Life is the coffee; the jobs, money and position in society are the cups. They are just tools to hold and contain Life, and the type of cup we have does not define, nor change the quality of life we live. Sometimes, by concentrating only on the cup, we fail to enjoy the coffee God has provided for us." God brews the coffee, not the cups. Enjoy your coffee! "The happiest people don't have the best of everything. They just make the best of everything. "[Z Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God.
Answer: To tell his students the right attitude to life.
Output:
Why did the professor offer his students coffee with varieties of cups?