[speaker001:] Is this watch yours?
[speaker002:] No, it isn't mine. I blundered upon it under the sofa. Do you know whose watch it is?
[speaker001:] Let me have a look. It's mine. I have been looking for it, but just cannot find it. It's present from my father.
[speaker002:] Well, here you are. Remember to put it in a proper place.