Suppose Harry Potter and the Philosopher's Stone is a fantasy novel written by British author J. K. Rowling. The first novel in the Harry Potter series, it follows Harry Potter, a young wizard who discovers his magical heritage on his eleventh birthday, when he receives a letter of acceptance to Hogwarts School of Witchcraft and Wizardry.
Can we infer that "Harry Potter and the Philosopher's Stone is a non-fiction book."? Yes, no, or maybe?