Who wrote the episode that received 1.83 million U.S. viewers?
CREATE TABLE table_13477468_3 (written_by VARCHAR, us_viewers__millions_ VARCHAR)
SELECT written_by FROM table_13477468_3 WHERE us_viewers__millions_ = "1.83"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_13477468_3 (written_by VARCHAR, us_viewers__millions_ VARCHAR) Question: Who wrote the episode that received 1.83 million U.S. viewers? [/INST] SELECT written_by FROM table_13477468_3 WHERE us_viewers__millions_ = "1.83" </s>