What is the production code for the episode directed by Sam weisman?
CREATE TABLE table_25604014_4 (production_code VARCHAR, directed_by VARCHAR)
SELECT production_code FROM table_25604014_4 WHERE directed_by = "Sam Weisman"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_25604014_4 (production_code VARCHAR, directed_by VARCHAR) Question: What is the production code for the episode directed by Sam weisman? [/INST] SELECT production_code FROM table_25604014_4 WHERE directed_by = "Sam Weisman" </s>