The key answer of exercise 8

One night in March 2008, Julio Díaz was in a train station in New York. He saw a boy with a knife. ‘Give me your money’, said the boy. Díaz gave him his wallet and his jacket to keep him warm. But then he said to the boy, ‘Do you want something to eat?’ The boy said, ‘Yes’. So they went to a restaurant together. They ate and talked. When the bill came, Díaz said, ‘Can I have some money?’ The boy gave him all the money. Díaz paid the bill and then gave the boy $20.