What was the title of the episode directed by John T. Kretchmer? 
CREATE TABLE table_18481791_2 (title VARCHAR, directed_by VARCHAR)
SELECT title FROM table_18481791_2 WHERE directed_by = "John T. Kretchmer"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_18481791_2 (title VARCHAR, directed_by VARCHAR) Question: What was the title of the episode directed by John T. Kretchmer?  [/INST] SELECT title FROM table_18481791_2 WHERE directed_by = "John T. Kretchmer" </s>