user: Question: Which men's singles has mixed doubles with Kevin Cao Melody Liang?
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: [2008.0, 'Shoji Sato', 'Tai Yi', 'Keishi Kawaguchi Naoki Kawamae', 'Reika Kakiiwa Mizuki Fujii', 'Chen Hung-ling Chou Chia-chi']
SQL:

assistant: SELECT "Men's singles" FROM "Table" WHERE "Mixed doubles" = 'Kevin Cao Melody Liang';