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

Question: Which driver had a grid of 18 with 68 laps?
SQL: SELECT "driver" FROM "race" WHERE "laps"='68' AND "grid"='18';

Question: Which driver had a grid of 18?
SQL: SELECT "driver" FROM "race" WHERE "grid"='18';

Question: Which driver had a grid of 22?
SQL: SELECT "driver" FROM "race" WHERE "grid"='22';