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_21550897_1 (_number VARCHAR, directed_by VARCHAR)
### Question:
What episode number was directed by Craig Ross, Jr.
### Answer:
SELECT _number FROM table_21550897_1 WHERE directed_by = "Craig Ross, Jr."