What is the total laps when manufacturer of gilera has time of 40:19.910 and grid is larger than 3?
CREATE TABLE "250cc_classification" (
  "rider" text,
  "manufacturer" text,
  "laps" real,
  "time" text,
  "grid" real
);
SELECT SUM("laps") FROM "250cc_classification" WHERE "manufacturer"='gilera' AND "time"='40:19.910' AND "grid">3;