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_20 (series__number VARCHAR, season__number VARCHAR, directed_by VARCHAR)
### Question:
How many episodes did Matthew Penn direct before season 22?
### Answer:
SELECT COUNT(series__number) FROM table_name_20 WHERE season__number < 22 AND directed_by = "matthew penn"