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_1840433_2 (number_of_editions VARCHAR, most_wins_by VARCHAR)

### Question ###
How many editions have a most wins value of Franco Marvulli (4)?

### Accurate SQL ###

SELECT COUNT(number_of_editions) FROM table_1840433_2 WHERE most_wins_by = "Franco Marvulli (4)"