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_14719 ( "Year" real, "Entrant" text, "Chassis" text, "Engine" text, "Points" real )

### Question ###
What was the earliest year for a car with 3 points and Cooper t20 chassis?

### Accurate SQL ###

SELECT MIN("Year") FROM table_14719 WHERE "Points" = '3' AND "Chassis" = 'cooper t20'