Who wrote those books about green eggs and ham?
user
What?
assistant
There was a book about Green Eggs and Ham.. you never heard of it?
user
Um, that book’s from the 70s...  were you talking about some kids book about Sam I Am?   Hm, is it in that book?  In a box?
assistant
Who wrote those books about green eggs and ham?
user
What?
assistant
There was a book about Green Eggs and Ham.. you never heard of it?
user
No.  I don’t think I have.  Can you tell me more about the book?
assistant
Who wrote those books about green eggs and ham?