What's the average front row starts for drivers with less than 68 pole positions and entries lower than 52?
CREATE TABLE "percentage_starts_from_front_row" (
  "driver" text,
  "front_row_starts" real,
  "pole_positions" real,
  "entries" real,
  "percentage" text
);
SELECT AVG("front_row_starts") FROM "percentage_starts_from_front_row" WHERE "pole_positions"<68 AND "entries"<52;