What was the official rating 16-39 of episode 9?
CREATE TABLE table_29773532_21 (official_rating_16_39 VARCHAR, episode VARCHAR)
SELECT official_rating_16_39 FROM table_29773532_21 WHERE episode = 9
### Context: CREATE TABLE table_29773532_21 (official_rating_16_39 VARCHAR, episode VARCHAR) ### Question: What was the official rating 16-39 of episode 9? ### Answer: SELECT official_rating_16_39 FROM table_29773532_21 WHERE episode = 9