If skeletal system is the subject when was it first aired?
CREATE TABLE table_191105_3 (
    first_aired VARCHAR,
    subject VARCHAR
)
SELECT first_aired FROM table_191105_3 WHERE subject = "Skeletal system"
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: If skeletal system is the subject when was it first aired? ### Input: CREATE TABLE table_191105_3 (
    first_aired VARCHAR,
    subject VARCHAR
) ### Response: SELECT first_aired FROM table_191105_3 WHERE subject = "Skeletal system"