Suppose Harry Potter and the Philosopher's Stone is the first novel in the Harry Potter series written by J.K. Rowling. It was first published in 1997 and follows the story of a young wizard, Harry Potter, and his adventures at Hogwarts School of Witchcraft and Wizardry.
Can we infer that "Harry Potter and the Philosopher's Stone is the last book in the series"? Yes, no, or maybe?