CREATE TABLE table_16972 ("Series #" FLOAT, "Season #" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" FLOAT)

What was the title of the episode with the production code 311?
SELECT "Title" FROM table_16972 WHERE "Production code" = '311'
SELECT "Title" FROM "table_16972" WHERE "Production code" = '311'