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
Classify each of the following among a country, a continent, both, none:  america, north america, australia, london, india, china


assistant
america : none, north america : continent, australia: both, london: none, india : country, china : country, nile : none, vatican city : country, europe : continent, arctic : none