2) The author or describing the author of said literature.
3) Describing said literature.
Patrick: Wow. did you expect that ending?
Krista: No, that coover completely shocked me.
Aubrie: The coover author always writes interesting stories.
Brian: Yeah, he always writes things I would like to read.
Joshua: Why do you look so surprised?
Rosco: I just read a coover story where all the main characters died at the end.