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_21422 ( "Fin. Pos" real, "Car No." real, "Driver" text, "Team" text, "Laps" real, "Time/Retired" text, "Grid" real, "Laps Led" real, "Points" text )

### Question ###
What grid did the driver who earned 19 points start at?

### Accurate SQL ###

SELECT "Grid" FROM table_21422 WHERE "Points" = '19'