What is the title of the episode written by Vanessa Bates? 
CREATE TABLE table_19517621_4 (title VARCHAR, written_by VARCHAR)
SELECT title FROM table_19517621_4 WHERE written_by = "Vanessa Bates"
### Context: CREATE TABLE table_19517621_4 (title VARCHAR, written_by VARCHAR) ### Question: What is the title of the episode written by Vanessa Bates?  ### Answer: SELECT title FROM table_19517621_4 WHERE written_by = "Vanessa Bates"