What is the name of the episode that aired originally on October 18, 1991?
CREATE TABLE table_3106 (
    "No. in series" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text,
    "Production code" real
)
SELECT "Title" FROM table_3106 WHERE "Original air date" = 'October 18, 1991'
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 name of the episode that aired originally on October 18, 1991? ### Input: CREATE TABLE table_3106 (
    "No. in series" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text,
    "Production code" real
) ### Response: SELECT "Title" FROM table_3106 WHERE "Original air date" = 'October 18, 1991'