Suppose J.K. Rowling is the author of the Harry Potter book series, which has achieved worldwide success and has been adapted into a successful film franchise. The series follows the life and adventures of a young wizard, Harry Potter, and his friends as they attend Hogwarts School of Witchcraft and Wizardry.
Can we infer that "J.K. Rowling has only written the Harry Potter books."? Yes, no, or maybe?