There is a frog living in a well. He never came out from the well. And he thought the sky was just as big as the mouth of the well. Crow: Hello, Frog. Let's have a talk. Frog: OK. Where are you from? Crow: I'm from the sky. Frog: Froth the sky? I don't believe you. The sky is just as big as tile mouth of a well. How can you come from the sky? Crow: It's blue. The sky is very big. You're wrong. Frog: Really? Crow: You can come out and have a look yourself. Frog: Wow! How big the world is! The frog lives in a well.