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_40914 ( "Title" text, "Director" text, "Producer" text, "Production Cost" text, "Singapore Gross" text )

### Question ###
Who was the director for the film produced by River Films?

### Accurate SQL ###

SELECT "Director" FROM table_40914 WHERE "Producer" = 'river films'