Premise: The Battle of the Sexes were three notable tennis matches between a man and a woman . Billie Jean King . In 1973 , at age 29 , she won the Battle of the Sexes tennis match against the 55-year-old Bobby Riggs , and was the founder of the Women 's Tennis Association , World TeamTennis ( with former husband Larry King ) , and the Women 's Sports Foundation .
Hypothesis: Billie Jean King was an athlete.
Label: ENTAILMENT