A: You're yawning. B: I sure am. A: You should go to bed. B: I will as soon as I finish this article. A: What are you reading? B: It's about crime in Los Angeles. A: What does it say? B: The mayor says the crime rate is going down. A: Then why does everyone lock their doors? B: I guess they haven't read this article. A: No one believes that the crime rate is going down. B: Maybe the mayor is just talking about his own neighborhood.