Grapes and foxes

Many days ago. One farmer's hobby is to cultivate grapes. That's what works. He began to do everything he could to grow grapes. The farmer took great care of the grape trees. So he also caught many grapes in the vine.

There was a clever fox living in the field where the farmer planted grapes. Seeing the ripe grapes, the fox became greedy. The fox tried very hard to eat the grapes. But could not. After trying for many days, he could not eat the grapes. At last the clever fox began to say, in fact, grapes cannot be eaten sour.