user: ### NOW ANSWER:
Question: when mixed doubles is Zheng Bo Ma Jin and womens singles is Wang Yihan, what was the tour?
Columns: ['Tour', 'Mens singles', 'Womens singles', 'Mens doubles', 'Womens doubles', 'Mixed doubles']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Malaysia Super Series', 'Lee Chong Wei', 'Tine Rasmussen', 'Jung Jae-sung Lee Yong-dae', 'Lee Hyo-jung Lee Kyung-won', 'Nova Widianto Lilyana Natsir']
SQL:

assistant: SELECT "Tour" FROM "Table" WHERE "Mixed doubles" = 'Zheng Bo Ma Jin' AND "Womens singles" = 'Wang Yihan';