Sofia: Hi all! New rule: write your name on your food. Please!

Marco: Who ate my yoghurt? It had my name on it!

Lena: Sorry, Marco! It was me. I thought it was Sofia's.

Sofia: It wasn't mine. Mine is the strawberry one, in the door.

Lena: I'll buy you a new one today. Promise!

Marco: Thanks. Also, there's a bad smell in the fridge. Is that cheese from last month?

Sofia: Not mine!

Lena: Oops. It's mine. I'll throw it away now.

Marco: Let's clean the fridge on Sunday. All three of us.

Sofia: Deal. And another rule: nothing older than one week.

Fiction note: All people, places and events in this dialogue are fictional.