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_name_4 (week VARCHAR, result VARCHAR)
### Question:
Which Week has a Result of l 21-19?
### Answer:
SELECT COUNT(week) FROM table_name_4 WHERE result = "l 21-19"