Mary worked in an office in London, and she usually went out and had lunch in a restaurant. She liked foreign food and often looked in the newspaper for the names of new restaurant, because she enjoyed going to them and eating new things. Sometimes she said "I don't like this restaurant. I'm not going to come here again."; but often she said "I like this one. I'm going to have my lunch here often." One day she saw the name of new Greek restaurant in her newspaper, and she went there for lunch. It was very small, but it was clean and nice, and the food was good. But then Mary found something hard in her mouth. She took it out. It was a button. "Look here, waiter!" she said "I've found this button in my food" "Thank you, thank you!" the waiter answered happily. "I looked everywhere for it"