Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_191105_3 (first_aired VARCHAR, subject VARCHAR)
### Question:
If skeletal system is the subject when was it first aired?
### Answer:
SELECT first_aired FROM table_191105_3 WHERE subject = "Skeletal system"