How many episodes had a production code of 5m13?
CREATE TABLE table_20967430_4 (ep VARCHAR, prod_code VARCHAR)
SELECT COUNT(ep) FROM table_20967430_4 WHERE prod_code = "5M13"
### Context: CREATE TABLE table_20967430_4 (ep VARCHAR, prod_code VARCHAR) ### Question: How many episodes had a production code of 5m13? ### Answer: SELECT COUNT(ep) FROM table_20967430_4 WHERE prod_code = "5M13"