CREATE TABLE table_name_83 (grid INT, laps VARCHAR, time_retired VARCHAR, driver VARCHAR)

Tell me the lowest Grid for engine and driver of emerson fittipaldi with more laps than 70
SELECT MIN(grid) FROM table_name_83 WHERE time_retired = "engine" AND driver = "emerson fittipaldi" AND laps > 70
SELECT MIN("grid") FROM "table_name_83" WHERE "driver" = "emerson fittipaldi" AND "engine" = "time_retired" AND "laps" > 70