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_25664518_3 (second_couple VARCHAR, itv1_weekly_ranking VARCHAR)

### Question ###
Who was the second couple for the episode having an ITV1 ranking of 29?

### Accurate SQL ###

SELECT second_couple FROM table_25664518_3 WHERE itv1_weekly_ranking = 29