user: Question: Which women was on the mixed doubles of Tontowi Ahmad Lilyana Natsir in 2011?
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: [2012.0, 'Chen Yuekun', 'Sun Yu', 'Lee Sheng-mu Tsai Chia-hsin', 'Eom Hye-won Jang Ye-na', 'Tontowi Ahmad Lilyana Natsir']
SQL:

assistant: SELECT "Women's singles" FROM "Table" WHERE "Mixed doubles" = 'Tontowi Ahmad Lilyana Natsir' AND "Year" = 2011.0;