person A: I visited the great pyramid recently. I'm amazed at what ancient humans were capable of building. Quite fascinating.
person B: Isn't it grand_comma_ I bet we no very little authentic information about them.
person A: I wouldn't be surprised. While I do trust the experts_comma_ I'm sure there is a lot they don't know. It's still kind of a mystery as to how they built it.
person B: I bet they are much older than we believe them to be.
person A: I'm not too sure about that part. But who knows_comma_ you could very well be right!