Who directed the episode that had 6.76 million U.S. viewers?
CREATE TABLE table_23242968_1 (directed_by VARCHAR, us_viewers__millions_ VARCHAR)
SELECT directed_by FROM table_23242968_1 WHERE us_viewers__millions_ = "6.76"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_23242968_1 (directed_by VARCHAR, us_viewers__millions_ VARCHAR) Question: Who directed the episode that had 6.76 million U.S. viewers? [/INST] SELECT directed_by FROM table_23242968_1 WHERE us_viewers__millions_ = "6.76" </s>