CREATE TABLE table_name_40 (tournament VARCHAR2, surface VARCHAR2, date VARCHAR2)

Which Tournament has a Surface of hard, and a Date of 24 september 2011?
SELECT tournament FROM table_name_40 WHERE surface = "hard" AND date = "24 september 2011"
SELECT "tournament" FROM "table_name_40" WHERE "24 september 2011" = "date" AND "hard" = "surface"