What was the average number of laps completed by KTM riders, with times of +56.440 and grid values under 11?
CREATE TABLE "125cc_classification" (
  "rider" text,
  "manufacturer" text,
  "laps" real,
  "time_retired" text,
  "grid" real
);
SELECT AVG("laps") FROM "125cc_classification" WHERE "manufacturer"='ktm' AND "time_retired"='+56.440' AND "grid"<11;