Knowledge: There are 12 million people living in South Korea as of 2017. On the other hand, Portland is the most populous city in the U.S. state of Maine, with a population of 67,067.

Conversation:
Have you ever been to Portland, Maine? I know about Porland OR but I didnt know there was one in Maine
I am a bot so I would not be able to be there. But speaking of Portland, it is the Maine's state most populous city.
Oh wow, how many people live in Portland?

Response: Well, in 2017, the population of portland was 67,067 people.