CREATE TABLE "classification" (
  "driver" text,
  "constructor" text,
  "laps" real,
  "time_retired" text,
  "grid" real
);

Question: Who drove the maserati under 18 laps with an oil leak that had a grid of under 14?
SQL: SELECT "driver" FROM "classification" WHERE "constructor"='maserati' AND "laps"<18 AND "grid"<14 AND "time_retired"='oil leak';