Choose from options: Determine if the sentence is true based on the text below:
Grandfather Frog scratched his knee thoughtfully.

Grandfather Frog scratched his head thoughtfully and looked a long time at the dam of logs and sticks and mud .<br>Then his big mouth widened in a big smile .<br>`` Why , that is very simple , '' said he , `` Jerry Muskrat will make a big hole through the dam near the bottom , because he knows how , and the rest of us will keep watch to see that no harm comes near . ''
Choices: 1. Yes; 2. It's impossible to say; 3. No;