Ben: Excuse me, Alan. Can you help me?
Alan: Sure.
Ben: I lost my watch. I must find it.
Alan: OK.
Alan: Here are some watches. Is the red watch yours, Ben?
Ben: No, it isn’t. It’s not mine.
Alan: What about the black watch? Is this yours?
Ben: Yes, it is.
Alan: Oh, good!
Ben: Thank you for your help, Alan.
Alan: You’re welcome.