['My friend got an advance signed copy of a book by my favorite author.', 'That is awesome who is your favorite author hopefully you can meet that person now.', 'Jasper Fforde. His books are really nerdy and awesome.']
I never heard of him what is a name of the book your friend plans on writing with this author?
My friend got an advance, signed copy of a book. That book was written by my favorite author.