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.

Article: During my many contacts with people in China, I have been asked by two different people what I would recommend to them so that they could be happy. One of these people was my student and friend who began her question by saying I always appeared happy to her. She then asked how I could be this way and if I could teach her how to be happy all the time. The other inquiry was basically the same and came from the secretary of a company for which I was doing some work. The first one to ask was my student and in thinking about an answer I even explored in class the idea of optimism and pessimism, of people who feel the glass is always half full and those who think it is half empty. It was easy to show that different people react differently to the same situations and conditions but that didn't bring me much closer to understanding why. About two months later I was riding to the airport in a taxi with the company secretary who asked me the same question and it made me think. Why did both these ladies feel they needed help to become happy? Indeed, why did either of them think they were not happy? Why did they choose to ask this question of me? Why are some people generally happy while others are not? Certainly if someone is healthy, it might be expected that they are happy, and this is probably true. However, some people have money and health but have a miserable _ that makes it difficult for them to have friends and meaningful relationships. Similarly, one would expect those who have little to complain about their fate and many do, but others are able to enjoy what they have and enjoy life. It seems the difference must lie within the people. What we may be looking at is acceptance of a personal set of circumstances and the contentment which flows from that. _ should not mean, however, that those people cannot wish for something better. If the difference between people who are happy and those who are not lies within the people themselves, can happiness be learned? I think there are things we can do, such as dreaming of the future, which can give us the sort of positive outlook which will generally make us happy people.
Answer: Those who feel the glass is always half full are pessimistic.
According to the passage, which of the following is true?

Article: It's not easy to find a person with the qualities it takes to be a hero. I didn't really understand the meaning of the word "hero" until my third year in the college. If you saw her, you wouldn't think she really looks the part, but she is stronger than Superman could ever be. Her name is Sandra Keierleber. I first met her at volleyball tryouts , but didn't notice anything special at first. As the week passed, however, she showed she had more heart than anyone. She stood out because she never gave up, no matter what. Sandra isn't the tallest or the fastest --- in fact, this was her first time playing volleyball and it showed--- but that didn't stop her. She was always the first to arrive and the last to leave. By the end of tryouts she had found a place in everyone's heart. When the name list for new members was put up, we all waited nervously as she checked. When she stood at the door and smiled happily, all we could do was cheer. After Sandra made the team, she worked even harder to improve her game. When she asked for help, we gladly taught her. She also became our fan, attending almost every school game and even joining us in the city games. We all like her, because she never thinks about doing things the easy way, or loses that smile. Because of her great efforts, she makes herself a true hero--- and my hero, too.
Answer: Common
What did the writer think of Sandra Keierleber at the beginning?

Article: Five people are at our table, including myself. I've already learnt a great deal about them in the short time we've been at sea, although we rarely meet except at mealtimes. First of all, there is Dr. Stone. He is a man of about sixty-five, with gray hair and a friendly face. He gave up his work a short while ago and is now traveling round the world before he retires to some quite country village. As a young man, he served for many years as a doctor in the army and visited many countries. He's told us a great deal about the city to which they are going. Then there is "Grandmother". I call her that because her name escapes me. In spite of being a grandmother, she looks remarkable young, no more than fifty. She is on her way to visit a daughter who went to Australia some years ago. Naturally she is very excited at the thought of seeing her again, and her three grandchildren, whom she has never seen. Then there is a man I don't care for very much, the engineer by the name of Barlow. He has been _ in England and is now returning to his work in Singapore. The other person who sits at our table is Mrs. Hunt. I've found out hardly anything about her. She's extremely quiet and rarely talks, except to consult the doctor about children's various illnesses. She is on her way to join her husband in India.
Answer: He knows a lot about the city the author is going to visit.
What can we know about Mr. Stone?