Question: Who won more Grand Slam Titles, Liezel Huber or Billie Jean King?

Passages:
The 1968 Australian Championships was a tennis tournament that took place in the outdoor Kooyong Stadium in Melbourne, Australia from 19 to 29 January.  It was the 56th edition of the Australian Championships (now known as Australian Open), the 16th held in Melbourne, and the first Grand Slam tournament of the year.  It was also the last Grand Slam tournament to be restricted to amateurs.  The singles titles were won by Australian William Bowrey and American Billie Jean King. First-seeded Martina Navratilova defeated ninth-seeded Kathy Jordan 6–2, 7–6 in the final to win the Women's Singles title at the 1983 Australian Open tennis tournament.  The tournament was played on grass courts at the Kooyong Stadium in Melbourne from 29 November through 11 December 1983.  Navratilova earned $75,000 prize money for winning the title, her 8th career Grand Slam singles title and her 2nd title at the Australian Open after 1981.  She improved her year record to 86 wins and 1 loss.  This tournament was also notable for being the first Australian Open in which Steffi Graf appeared in the main draw, and the last time that Billie Jean King appeared in the main singles draw of a grand slam. Kenneth Robert Rosewall {'1': ", '2': ", '3': 'AM, MBE', '4': "} (born 2 November 1934) is a former world top-ranking amateur and professional tennis player from Australia.  He won a record 23 tennis Majors including 8 Grand Slam singles titles and before the Open Era a record 15 Pro Slam titles and a record 35 Major finals overall.  He won the Pro Grand Slam in 1963.  Rosewall won 9 slams in doubles with a career double grand slam.  He is considered to be one of the greatest tennis players of all time.  He had a renowned backhand and enjoyed a long career at the highest levels from the early 1950s to the early 1970s.  Rosewall was one of the two best male players for about nine years and was the World No. 1 player for a number of years in the early 1960s.  He was ranked among the top 20 players, amateur or professional, every year from 1952 through 1977.  Rosewall is the only player to have simultaneously held Pro Grand Slam titles on three different surfaces (1962–1963).  At the 1971 Australian Open he became the first male player during the open era to win a Grand Slam tournament without dropping a set. Liezel Huber and Lisa Raymond were the defending champions, but decided not to defend their title together.  Huber partnered up with Nuria Llagostera Vives, while Raymond played alongside Flavia Pennetta.  Huber and Llagostera Vives defeated Pennetta and Raymond in the first round, but lost to Anabel Medina Garrigues and Katarina Srebotnik in the semifinals. <br> Billie Jean King ("née" Moffitt; born November 22, 1943) is an American former World No. 1 professional tennis player.  King won 39 Grand Slam titles: 12 in singles, 16 in women's doubles, and 11 in mixed doubles.  King won the singles title at the inaugural WTA Tour Championships.  King often represented the United States in the Federation Cup and the Wightman Cup.  She was a member of the victorious United States team in seven Federation Cups and nine Wightman Cups.  For three years, King was the United States' captain in the Federation Cup. Liezel Huber (née Horn; born 21 August 1976) is a South African-American retired tennis player who represents the United States internationally.  Huber has won four Grand Slam titles in women's doubles with partner Cara Black, one with Lisa Raymond, and two mixed doubles titles with Bob Bryan.  On 12 November 2007, she became the co-World No. 1 in doubles with Cara Black.  On 19 April 2010, Huber became the sole No. 1 for the first time in her career. The tennis tournaments at the 2012 Summer Olympics in London were staged at the All England Club in Wimbledon, from 28 July to 5 August.  This was the first Olympic grass court tournament since tennis was reintroduced as an Olympic sport and the first to be held at a Grand Slam venue in the Open era.  (Two other 2012 Summer Olympic bid finalists had also offered Grand Slam venues – second-place finisher Paris offered the French Open venue, the Stade Roland Garros, while fourth-place finisher New York offered the US Open venue, the USTA Billie Jean King National Tennis Center in Flushing Meadows-Corona Park, Queens.) Cara Black and Liezel Huber were the two-time defending champions but did not compete together.  Black partnered up with Lisa Raymond and Huber with Bethanie Mattek-Sands.  Black and Raymond won in the final after Huber and Mattek-Sands retired. Martina Navratilova defeated Andrea Jaeger 6–0, 6–3 in the final to win the Ladies' Singles tennis title at the 1983 Wimbledon Championships.  Billie Jean King became the oldest semi-finalist at a Grand Slam event at 39 years, 7 months and 9 days old, an Open Era record.  Chris Evert's loss in the 3rd round, snapped a streak of 34 consecutive Grand Slam semi-finals, she had made the semi-finals in her first 34 Grand Slam appearances between the US Open 1971 and the French Open 1983. First-seeded defending champions Virginia Ruano Pascual and Paola Suárez defeated second-seeded Cara Black and Liezel Huber to win the title for the fourth time (after 2001, 2002 and 2004).  It was their 29th doubles title together, of which eight were won at Grand Slam tournaments.

Supporting sentences:
 Huber has won four Grand Slam titles in women's doubles with partner Cara Black, one with Lisa Raymond, and two mixed doubles titles with Bob Bryan. Billie Jean King ("née" Moffitt; born November 22, 1943) is an American former World No. 1 professional tennis player.  King won 39 Grand Slam titles: 12 in singles, 16 in women's doubles, and 11 in mixed doubles.