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_12722302_3 (no VARCHAR, directed_by VARCHAR)
### Question:
What's the number of the episode directed by Tucker Gates?
### Answer:
SELECT no FROM table_12722302_3 WHERE directed_by = "Tucker Gates"