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_31084 ( "Rk" real, "Name" text, "Country" text, "Matches Played" real, "Matches Won" real, "Points" real, "Prize Money (USD)" real )

### Question ###
What country offered a prize of 66400 US dollars?

### Accurate SQL ###

SELECT "Country" FROM table_31084 WHERE "Prize Money (USD)" = '66400'