Suppose Serena Williams, born on September 26, 1982, is a professional tennis player and has won 23 Grand Slam singles titles, the most by any player in the Open Era. She is married to Alexis Ohanian, co-founder of Reddit. Williams is also an advocate for gender equality and has been involved in various philanthropic efforts.
Can we infer that "Serena Williams has never won a Grand Slam singles title."? Yes, no, or maybe?