When is the French Open when serena williams is the player?
{'header': ['#', 'Player', 'Age', 'Australian Open', 'French Open', 'Wimbledon', 'US Open'], 'page_title': 'Grand Slam (tennis)', 'page_id': '', 'types': ['real', 'text', 'text', 'real', 'real', 'real', 'real'], 'id': '1-197638-7', 'section_title': "Women's singles", 'caption': "Women's singles", 'rows': [['1', 'Maureen Connolly Brinker', '18 years 254 days', '1953', '1953', '1952', '1951'], ['2', 'Doris Hart', '28 years 359 days', '1949', '1950', '1951', '1954'], ['3', 'Shirley Fry Irvin', '29 years 211 days', '1957', '1951', '1956', '1956'], ['4', 'Margaret Court', '20 years 353 days', '1960', '1962', '1963', '1962'], ['5', 'Billie Jean King', '28 years 241 days', '1968', '1972', '1966', '1967'], ['6', 'Chris Evert', '28 years 357 days', '1982', '1974', '1974', '1975'], ['7', 'Martina Navratilova', '26 years 328 days', '1981', '1982', '1978', '1983'], ['8', 'Steffi Graf', '19 years 89 days', '1988', '1987', '1988', '1988'], ['9', 'Serena Williams', '21 years 121 days', '2003', '2002', '2002', '1999']], 'name': 'table_197638_7'}