Suppose J.K. Rowling (born 31 July 1965) is a British author and screenwriter best known for writing the Harry Potter fantasy series. The books have won multiple awards and sold more than 500 million copies, becoming the best-selling book series in history. The Harry Potter series has been adapted into a successful film series, with Rowling producing the final two films in the franchise.
Can we infer that "J.K. Rowling has never written any books other than Harry Potter."? Yes, no, or maybe?