CREATE TABLE table_40156 ("Year" FLOAT, "Men's singles" TEXT, "Women's singles" TEXT, "Men's doubles" TEXT, "Women's doubles" TEXT, "Mixed doubles" TEXT)

What is Women's Doubles, when Year is 2007?
SELECT "Women's doubles" FROM table_40156 WHERE "Year" = '2007'
SELECT "Women's doubles" FROM "table_40156" WHERE "Year" = '2007'