CREATE TABLE table_name_70 (grid INT, time_retired VARCHAR, qual VARCHAR)

What is the smallest grid with a Time/Retired of engine, and a qual of less than 138.75?
SELECT MIN(grid) FROM table_name_70 WHERE time_retired = "engine" AND qual < 138.75
SELECT MIN("grid") FROM "table_name_70" WHERE "engine" = "time_retired" AND "qual" < 138.75