Don’t ask International Olympic Committee President Thomas Bach what a woman is. The IOC chief said Friday he knows of no reliable scientific way to determine the biological sex of athletes, frustrating advocates for women’s sports with two sex-disputed athletes on the verge of winning medals in women’s boxing at the 2024 Paris Olympics. “It is not as easy as some in this culture war may want to portray it, that XX or XY [chromosomes] is a clear distinction between men and women,” said Mr. Bach