Mary: What did you do today?
Nack: I went to a bookstore this afternoon.
Mary: Did you buy something?
Nack: No, I didn't. But I read some books at the bookstore.
Mary: What books did you read?
Nack: I read a comic "DRAGON-SAKURA".
Mary: What's that?
Nack: It is one of Japanese manga about university entrance exam.