Who wrote the episode with 18.07 million viewers? 
CREATE TABLE table_26198709_1 (written_by VARCHAR, us_viewers__million_ VARCHAR)
SELECT written_by FROM table_26198709_1 WHERE us_viewers__million_ = "18.07"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_26198709_1 (written_by VARCHAR, us_viewers__million_ VARCHAR) Question: Who wrote the episode with 18.07 million viewers?  [/INST] SELECT written_by FROM table_26198709_1 WHERE us_viewers__million_ = "18.07" </s>