user: Question: What year had a Women's doubles and Women's singles with No competition?
Columns: ['Year', "Men's singles", "Women's singles", "Men's doubles", "Women's doubles", 'Mixed doubles']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1958', 'Knud Aage Nielsen', 'Tonny Holst Christensen', 'Hugh Findlay Ronald Lockwood', 'Heather Ward Barbara Carpenter', 'Hugh T. Findlay Heather Ward']
SQL:

assistant: SELECT "Year" FROM "Table" WHERE "Women's doubles" = 'No competition' AND "Women's singles" = 'No competition';