CREATE TABLE table_79918 ("Year" FLOAT, "Men's singles" TEXT, "Women's singles" TEXT, "Men's doubles" TEXT, "Women's doubles" TEXT, "Mixed doubles" TEXT)

Which mixed doubles happened later than 2011?
SELECT "Mixed doubles" FROM table_79918 WHERE "Year" > '2011'
SELECT "Mixed doubles" FROM "table_79918" WHERE "Year" > '2011'