Which of the following sentences is nonsensical?
Options:
- Sentence A: "In some geological parks, we can appreciate dinosaurs and learn about their histories."
- Sentence B: "Polar bear is a bear with white fur that lives in the tropics."

Hmmm, let me think. I want to lay out the solution in details.
user
Dinosaurs lived in prehistoric times, but they are extinct now. The answer is Sentence B.
assistant