Who's the writer of the episode see by 12.13 million US viewers?
CREATE TABLE table_12159115_2 (written_by VARCHAR, us_viewers__millions_ VARCHAR)
SELECT written_by FROM table_12159115_2 WHERE us_viewers__millions_ = "12.13"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_12159115_2 (written_by VARCHAR, us_viewers__millions_ VARCHAR) Question: Who's the writer of the episode see by 12.13 million US viewers? [/INST] SELECT written_by FROM table_12159115_2 WHERE us_viewers__millions_ = "12.13" </s>