Once upon a time, there was a pretty bunny. The bunny loved to jump all day long. It would jump in the grass, on the rocks, and even on the sand.
One day, the pretty bunny saw a big pile of coal. The bunny thought it would be fun to jump on the coal too. So, the bunny went to the coal and started to jump on it.
But, the coal was not soft like the grass or the sand. The pretty bunny hurt its foot when it jumped on the coal. The bunny cried and could not jump anymore. The pretty bunny was sad because it could not jump and play like before.
