Table schema:
CREATE TABLE table_name_83 (time VARCHAR, rider VARCHAR, manufacturer VARCHAR, laps VARCHAR, grid VARCHAR)

Question: Name the Time which has Laps of 19, and a Grid larger than 19, and a Manufacturer of ktm, and a Rider of randy krummenacher?
SQL: SELECT time FROM table_name_83 WHERE laps = 19 AND grid > 19 AND manufacturer = "ktm" AND rider = "randy krummenacher"