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_19517621_4 (original_airdate VARCHAR, title VARCHAR)
### Question:
What was the original air date for the episode Calle, The Transit of Venus? 
### Answer:
SELECT original_airdate FROM table_19517621_4 WHERE title = "The Transit of Venus"