Who were the 3rd couple that were viewed by 4.89 million viewers? 
CREATE TABLE table_25664518_4 (viewers__millions_ VARCHAR)
SELECT 3 AS rd_couple FROM table_25664518_4 WHERE viewers__millions_ = "4.89"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_25664518_4 (viewers__millions_ VARCHAR) Question: Who were the 3rd couple that were viewed by 4.89 million viewers?  [/INST] SELECT 3 AS rd_couple FROM table_25664518_4 WHERE viewers__millions_ = "4.89" </s>