Answer the following question: Read the following conversation and answer the question.  W: Good morning, everybody. Today, for our writing class, we are glad to have Mr. Henry Stone with us, a well-known writer in this country. He is going to share with us his writing experiences. Now, Henry, please tell us how you find so many interesting things for your stories.  M: OK. I watch people a lot. I do that when I travel. I've been to many countries such as Britain, Italy and Sweden. So I spend a lot of time at airports. While waiting for my flights, I watch people passing by and start my imagination. For example, the other day, when I was waiting for my flight to Greece, I saw a couple. They were buying magazines at that moment. They were not wearing business clothes, but the man was carrying a suitcase. Every few seconds, the woman looked around. I wondered if someone was following them. Perhaps they were running away, and you know, this reminded me of a story in the newspaper that day: a bank clerk stole one million pounds a week before and disappeared with his wife. There was a picture of them in the paper. The couple really looked like the wiz. Maybe I should stop them. Just then, I saw them say goodbye to each other, and the woman walked away. Well, sometimes I make mistakes like that. But I find things like that are very useful for my writing.  Question: What does Mr. Henry Stone do?   - A bank clerk.  - A teacher.  - A writer.
Answer:
A writer.