Table schema:
CREATE TABLE table_name_30 (rider VARCHAR, grid VARCHAR, time VARCHAR, laps VARCHAR, manufacturer VARCHAR)

Question: Who was the rider who had less than 30 laps, ended in an accident with a car manufactured by yamaha on a grid larger than 3?
SQL: SELECT rider FROM table_name_30 WHERE laps < 30 AND manufacturer = "yamaha" AND time = "accident" AND grid > 3