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_2431 ( "Date" text, "Tournament" text, "Location" text, "Purse ( $ )" real, "Winner" text, "Score" text, "1st Prize ( $ )" text )

### Question ###
How many times could you earn $470,000 as the grand prize?

### Accurate SQL ###

SELECT COUNT("Score") FROM table_2431 WHERE "1st Prize ( $ )" = '470,000'