Input (grade 9): Billie Jean King said about Navratilova in 2006, "She's the greatest singles, doubles and mixed doubles player who's ever lived."
Output (grade 9): Martina Navratilova (Czech: Martina Navrátilová; born October 18, 1956, in Prague, Czechoslovakia) is a Czech-American former World No. 1 woman tennis player.