What was the title of the episode with a production code of 3x6404?
CREATE TABLE table_27776266_1 (title VARCHAR, production_code VARCHAR)
SELECT title FROM table_27776266_1 WHERE production_code = "3X6404"
### Context: CREATE TABLE table_27776266_1 (title VARCHAR, production_code VARCHAR) ### Question: What was the title of the episode with a production code of 3x6404? ### Answer: SELECT title FROM table_27776266_1 WHERE production_code = "3X6404"