system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
Which of these animals is not a bear: brown bear, black bear, polar bear, koala bear, panda bear.


assistant
The answer is koala bear. Despite the name, the “koala bear” is actually a marsupial, not a bear.