Suppose Harry Potter and the Philosopher's Stone (released in the United States as Harry Potter and the Sorcerer's Stone) is a fantasy novel written by British author J.K. Rowling. It is the first book in the Harry Potter series and follows the adventures of a young wizard, Harry Potter, and his friends as they attend Hogwarts School of Witchcraft and Wizardry.
Can we infer that "Ron Weasley is the main antagonist in Harry Potter and the Philosopher's Stone."? Yes, no, or maybe?