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_5933 ( "Date" text, "Tournament" text, "Location" text, "Winner" text, "Score" text, "1st prize ( $ )" real )

### Question ###
What is the amount of the 1st prize when the Winner was ken green (4)?

### Accurate SQL ###

SELECT "1st prize ( $ )" FROM table_5933 WHERE "Winner" = 'ken green (4)'