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_21422977_1 (coalition_parties VARCHAR, nº VARCHAR)

### Question ###
When nº is 3, what are all the coaliton parties?

### Accurate SQL ###

SELECT coalition_parties FROM table_21422977_1 WHERE nº = 3