Who wrote the episode with 3.92 million US viewers?
CREATE TABLE table_25740548_3 (written_by VARCHAR, us_viewers__million_ VARCHAR)
SELECT written_by FROM table_25740548_3 WHERE us_viewers__million_ = "3.92"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_25740548_3 (written_by VARCHAR, us_viewers__million_ VARCHAR) Question: Who wrote the episode with 3.92 million US viewers? [/INST] SELECT written_by FROM table_25740548_3 WHERE us_viewers__million_ = "3.92" </s>