Question: when womens singles is Wang Yihan and tour is French Super Series, what were the men's singles?
SQL: SELECT "Mens singles" FROM "1-21001903-2" WHERE "Womens singles" = 'Wang Yihan' AND "Tour" = 'French Super Series';

Question: when mixed doubles is Zheng Bo Ma Jin and womens singles is Wang Yihan, what was the tour?
SQL: SELECT "Tour" FROM "1-21001903-2" WHERE "Mixed doubles" = 'Zheng Bo Ma Jin' AND "Womens singles" = 'Wang Yihan';