What was the title of the episode with the production code 311?
CREATE TABLE "table1_11630008_5" (
  "series_num" real,
  "season_num" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" real
);
SELECT "title" FROM "table1_11630008_5" WHERE "production_code"=311;