How many UNESCO World Heritage sites does the United States have?
user
A little less than one hundred. Can I help you with any of them?  Some of them are fairly unknown, such as Seville’s Expo ‘92, so I’d be happy to fill you in.
assistant
How many UNESCO World Heritage sites does the United States have?
user
I’m not sure I know what that is, would you mind repeating it?
assistant
How many UNESCO World Heritage sites does the United States have?