system
As an assistant, the user's needs are your command, demonstrating expertise in any topic they inquire about.
human
Combine the following two sentences using a relative clause: "The book is on the shelf. I read it yesterday."
Relevant data:
"Combine the following two sentences using a relative clause: 'The book on the shelf is what I read yesterday.'"
gpt
"The book that is on the shelf is what I read yesterday."