Who wrote the episode with 9.81 million US viewers?
CREATE TABLE table_28688313_1 (written_by VARCHAR, us_viewers__in_millions_ VARCHAR)
SELECT written_by FROM table_28688313_1 WHERE us_viewers__in_millions_ = "9.81"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_28688313_1 (written_by VARCHAR, us_viewers__in_millions_ VARCHAR) Question: Who wrote the episode with 9.81 million US viewers? [/INST] SELECT written_by FROM table_28688313_1 WHERE us_viewers__in_millions_ = "9.81" </s>