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_21649285_2 ( margin_of_victory VARCHAR, no VARCHAR )

### Question ###
Margin of victory on no. 4 was?

### Accurate SQL ###

SELECT margin_of_victory FROM table_21649285_2 WHERE no = 4