Question: Who won Women's doubles when Nikhil Kanetkar won Men's singles?
SQL: SELECT "Women's doubles" FROM "2-12282998-1" WHERE "Men's singles" = 'Nikhil Kanetkar';

Question: Who won Women's doubles when Zen Yaqiong won Women's singles?
SQL: SELECT "Women's doubles" FROM "2-12282998-1" WHERE "Women's singles" = 'Zen Yaqiong';