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 (episode__number INTEGER, title VARCHAR)
### Question:
What is the latest episode number with the title of Jerusalem? 
### Answer:
SELECT MAX(episode__number) FROM table_19517621_4 WHERE title = "Jerusalem"