Question: Carl Chang, is the older brother and former coach of which tennis star, a now retired, American professional tennis player, that won 34 top-level professional singles titles?
Sentence (from "Li Na"): Li was also the runner-up at the 2013 Australian Open and 2013 WTA Tour Championships, a three-time quarterfinalist at Wimbledon and a semifinalist at the 2008 Beijing Olympic Games and 2013 US Open.
Relevant evidence: No