Suppose Maria Sharapova is a retired Russian professional tennis player. She played on the Women's Tennis Association (WTA) tour and was ranked World No. 1 in singles by the WTA on five separate occasions, for a total of 21 weeks in her career. She is one of ten women, and the only Russian, to hold the career Grand Slam.
Can we infer that "Maria Sharapova never won a Grand Slam title"? Yes, no, or maybe?