What is the repeat date of the episode that aired 22/12/1968?
CREATE TABLE table_18089 (
    "#" real,
    "Title" text,
    "Director" text,
    "Writer(s)" text,
    "Originalairdate" text,
    "Repeatairdate(s)" text,
    "Prod.Code" text
)
SELECT "Repeatairdate(s)" FROM table_18089 WHERE "Originalairdate" = '22/12/1968'
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 is the repeat date of the episode that aired 22/12/1968? ### Input: CREATE TABLE table_18089 (
    "#" real,
    "Title" text,
    "Director" text,
    "Writer(s)" text,
    "Originalairdate" text,
    "Repeatairdate(s)" text,
    "Prod.Code" text
) ### Response: SELECT "Repeatairdate(s)" FROM table_18089 WHERE "Originalairdate" = '22/12/1968'