What is the original air date when there were 12.81 million u.s viewers?
CREATE TABLE table_11404452_1 (original_air_date VARCHAR, us_viewers__millions_ VARCHAR)
SELECT original_air_date FROM table_11404452_1 WHERE us_viewers__millions_ = "12.81"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_11404452_1 (original_air_date VARCHAR, us_viewers__millions_ VARCHAR) Question: What is the original air date when there were 12.81 million u.s viewers? [/INST] SELECT original_air_date FROM table_11404452_1 WHERE us_viewers__millions_ = "12.81" </s>