Who wrote the episode with e4515 as the production code?
CREATE TABLE table_25750635_2 (written_by VARCHAR, production_code VARCHAR)
SELECT written_by FROM table_25750635_2 WHERE production_code = "E4515"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_25750635_2 (written_by VARCHAR, production_code VARCHAR) Question: Who wrote the episode with e4515 as the production code? [/INST] SELECT written_by FROM table_25750635_2 WHERE production_code = "E4515" </s>