Who directed the episode with production code ca303?
CREATE TABLE table_25740548_4 (directed_by VARCHAR, production_code VARCHAR)
SELECT directed_by FROM table_25740548_4 WHERE production_code = "CA303"
### Context: CREATE TABLE table_25740548_4 (directed_by VARCHAR, production_code VARCHAR) ### Question: Who directed the episode with production code ca303? ### Answer: SELECT directed_by FROM table_25740548_4 WHERE production_code = "CA303"