CREATE TABLE table_30404 ("Season" TEXT, "Host" TEXT, "Mens Singles" TEXT, "Womens Singles" TEXT, "Mens Doubles" TEXT, "Womens Doubles" TEXT)

Who is everyone on the men's doubles when men's singles is Ma Wenge?
SELECT "Mens Doubles" FROM table_30404 WHERE "Mens Singles" = 'Ma Wenge'
SELECT "Mens Doubles" FROM "table_30404" WHERE "Mens Singles" = 'Ma Wenge'