Complex sentence: Johnnie Mae Young (March 12,1923--January 14,2014) was an American professional wrestler and an influential pioneer in women's wrestling, helping to increase its popularity during World War II and training many generations of wrestlers.
Split into simpler sentences: Johnnie Mae Young (March 12,1923--January 14,2014) was an American professional wrestler. Young was an influential pioneer in women's wrestling, helping to increase its popularity during World War II and training many generations of wrestlers.