CREATE TABLE table_23547 ("#" TEXT, "Original title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original airdate" TEXT, "Production code" TEXT)

What was the original title of 3.19?
SELECT "Original title" FROM table_23547 WHERE "Production code" = '3.19'
SELECT "Original title" FROM "table_23547" WHERE "Production code" = '3.19'