system
Assistant's personality:
Helpful, factual, and friendly
human
Combine the following two sentences into one sentence using a relative pronoun: The book is about the life of David Beckham. David Beckham is a famous footballer.
Relevant data:
"The book which discusses the life of David Beckham has become a popular read among football fans."
gpt
David Beckham, the famous footballer, is the central figure of the popular book.