[['[TABLECONTEXT]', 'PLAYER', 'Billie Jean King'], ['Billie Jean King', 'FINALS', '6'], ['[TABLECONTEXT]', '[TITLE]', "Women's Wimbledon Singles Finalists"], ['Billie Jean King', 'NATIONALITY', 'United States']]
_____ of the United States appeared in 6 Wimbledon single's finals.