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