Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_27984 ( "#" real, "Airdate" text, "No. of couples" real, "1st couple" text, "2nd couple" text, "3rd couple" text, "4th couple" text, "Viewers (millions)" text, "ITV1 weekly ranking" text )

### Question ###
Who were the 3rd couple that were viewed by 4.89 million viewers?

### Accurate SQL ###

SELECT "3rd couple" FROM table_27984 WHERE "Viewers (millions)" = '4.89'