response: That sounds interesting, which of the 59 national parks would you want to visit?
original_response: That could be fun!  The United States has 59 protected areas known as national parks that are operated by the National Park Service
history: I want to buy a pass and visit all the national parks in the US.
knowledge: The United States has 59 protected areas known as national parks that are operated by the National Park Service, an agency of the Department of the Interior.