Four friends live in a small town. Their names are John, Miller, Smith and Carte. They all have different jobs. One is a policeman, one is a cook, one is a farmer, and one is a doctor. It’s Tuesday afternoon. John’s son breaks his leg and John takes him to the doctor. The doctor’s sister is Smith’s wife. The farmer isn’t married. He has a lot of hens. Miller often buys eggs from the farmer. The policeman sees Smith and Miller every day for they are neighbors. Now who is the policeman? Who is the cook? Who is the farmer? Who is the doctor?