Complex sentence: The book, which is J.K. Rowling's debut novel, was published on 26 June 1997 by Bloomsbury in London, while in 1998 Scholastic Corporation published an edition for the United States market under the title "Harry Potter and the Sorcerer's Stone".
Split into simpler sentences: The book, which is J.K. Rowling's debut novel, was published on 26 June 1997 by Bloomsbury in London. In 1998 Scholastic Corporation published an edition for the United States market under the title "Harry Potter and the Sorcerer's Stone".