Suppose Serena Williams (born September 26, 1981) is an American professional tennis player who has won 23 Grand Slam singles titles. She is regarded as one of the greatest tennis players of all time. Serena has also been involved in various philanthropic endeavors, including the Serena Williams Foundation.
Can we infer that "Serena Williams has never won a Grand Slam singles title."? Yes, no, or maybe?