user: Question: Women's singles of Michaela Ritter, and a Men's singles of Andreas Radl has what women's doubles?
Columns: ['Year', "Men's singles", "Women's singles", "Men's doubles", "Women's doubles", 'Mixed doubles']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1986.0, 'Armand Jehle', 'Cornelia Marxer', 'Armand Jehle Markus Becker', 'Cornelia Marxer Astrid Wanger', 'Lothar Iser Astrid Wanger']
SQL:

assistant: SELECT "Women's doubles" FROM "Table" WHERE "Women's singles" = 'Michaela Ritter' AND "Men's singles" = 'Andreas Radl';