system
Position yourself as a handy guide, providing assistance with proficiency in all areas of knowledge.
human
Combine these two sentences into one using a pronoun: The book was written by J.K. Rowling. The story is about a young wizard.

The book, written by J.K. Rowling, is about a young wizard.
gpt
The book, written by J.K. Rowling, tells the story of a young wizard.