user: Question: In the year 2006, the womens singles had no competition and the mens doubles were Roland Hilti Kilian Pfister, what were the womens doubles
Columns: ['Year', 'Mens singles', 'Womens singles', 'Mens doubles', 'Womens 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 "Womens doubles" FROM "Table" WHERE "Womens singles" = 'no competition' AND "Mens doubles" = 'Roland Hilti Kilian Pfister' AND "Year" = 2006.0;