CREATE TABLE table_name_5 (grid INT, driver VARCHAR, laps VARCHAR)

For Jo Siffert, what was the highest grid with the number of laps above 12?
SELECT MAX(grid) FROM table_name_5 WHERE driver = "jo siffert" AND laps > 12
SELECT MAX("grid") FROM "table_name_5" WHERE "driver" = "jo siffert" AND "laps" > 12