user: Question: Who won the mens singles in 2009?
Columns: ['Year', 'Mens singles', 'Womens singles', 'Mens doubles', 'Womens doubles', 'Mixed doubles']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1991.0, 'Alan Budi Kusuma', 'Huang Hua', 'Li Yongbo Tian Bingyi', 'Chung Myung-hee Hwang Hye-young', 'Liu Jianjun Wang Xiaoyuan']
SQL:

assistant: SELECT "Mens singles" FROM "Table" WHERE "Year" = 2009.0;