Tomy: Amy, what are you doing here?

Amy: I can't find my pen. Where is it?

Tomy: Is it under the red book?

Amy: No, it isn't. The blue book and the purple book are under the red one.

Tomy: Is it behind the cup?

Amy: Oh, no, it isn't.

Tomy: Some papers are behind the cup.

Amy: Er, is it on the book?

Tomy: No, an apple is on the book.

Amy: oh, Tomy, I know where it is. Look, it’s on the desk.