CREATE TABLE table_name_70 (laps NUMBER, driver VARCHAR2, grid VARCHAR2)

How many Laps have a Driver of david coulthard, and a Grid smaller than 14?
SELECT SUM(laps) FROM table_name_70 WHERE driver = "david coulthard" AND grid < 14
SELECT SUM("laps") FROM "table_name_70" WHERE "david coulthard" = "driver" AND "grid" < 14