Suppose J.K. Rowling is a British author and philanthropist. She is best known for writing the Harry Potter series, which has become the best-selling book series in history. Rowling has also written other novels, such as The Casual Vacancy and The Cuckoo's Calling under the pseudonym Robert Galbraith.
Can we infer that "J.K. Rowling never wrote any books besides Harry Potter."? Yes, no, or maybe?