<|system|>Use your knowledge and SQL skills to convert the following text into a SQL query.
Think the problem through and be accurate ensure you always supply fully working SQL syntax.

SQL Statments should be wrapped in <codestart type="sql"> and </codeend> tags.

Example output:
<codestart type="sql">SELECT * FROM table_name;</codeend>
<codestart type="sql">SELECT column_name FROM table_name WHERE column_name = 'value';</codeend><|end|><|user|>What is the original air date when there were 12.81 million u.s viewers?

SQL Table Create Statement:
CREATE TABLE table_11404452_1 (original_air_date VARCHAR, us_viewers__millions_ VARCHAR)<|end|><|assistant|><codestart type="sql">SELECT original_air_date FROM table_11404452_1 WHERE us_viewers__millions_ = "12.81"</codeend><|end|>