Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_19 (laps INTEGER, driver VARCHAR, grid VARCHAR, time_retired VARCHAR)
### Question:
What was the highest lap for Luigi Piotti with more than 13 grid and a time/retired engine?
### Answer:
SELECT MAX(laps) FROM table_name_19 WHERE grid > 13 AND time_retired = "engine" AND driver = "luigi piotti"