Who directed the episode that was watched by 6.62 million U.S. viewers?
CREATE TABLE table_22181917_2 (directed_by VARCHAR, us_viewers__millions_ VARCHAR)
SELECT directed_by FROM table_22181917_2 WHERE us_viewers__millions_ = "6.62"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_22181917_2 (directed_by VARCHAR, us_viewers__millions_ VARCHAR) Question: Who directed the episode that was watched by 6.62 million U.S. viewers? [/INST] SELECT directed_by FROM table_22181917_2 WHERE us_viewers__millions_ = "6.62" </s>