What was the production code for 'down to earth'?
CREATE TABLE table_23548 (
    "#" text,
    "Original title" text,
    "Directed by" text,
    "Written by" text,
    "Original airdate" text,
    "Production code" text
)
SELECT "Production code" FROM table_23548 WHERE "Original title" = 'Down to Earth'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What was the production code for 'down to earth'? ### Input: CREATE TABLE table_23548 (
    "#" text,
    "Original title" text,
    "Directed by" text,
    "Written by" text,
    "Original airdate" text,
    "Production code" text
) ### Response: SELECT "Production code" FROM table_23548 WHERE "Original title" = 'Down to Earth'