Kate: Oh, no! Where are my keys?
Joe: I don't know. Are they in your purse?
Kate: No, They're not.
Joe: Maybe they're on the table in the restaurant.
Sever: Excuse me. Are these your keys?
Kate: Yes, they are. Thank you.
Sever: You're welcome. And is this your wallet?
Kate: Hmm. No, it's not. Where's your wallet, Joe?
Joe: It's in my pocket. .....Wait a minute! That is my wallet.