CREATE TABLE "250cc_classification" (
  "rider" text,
  "manufacturer" text,
  "laps" real,
  "time_retired" text,
  "grid" real
);

Question: Which Manufacturer has 1 lap and had an accident?
SQL: SELECT "manufacturer" FROM "250cc_classification" WHERE "laps"=1 AND "time_retired"='accident';

Question: Which rider has a Manufacturer of honda with a time of +44.814?
SQL: SELECT "rider" FROM "250cc_classification" WHERE "manufacturer"='honda' AND "time_retired"='+44.814';

Question: How many grids have a time of +1:21.239 and more than 25 laps?
SQL: SELECT COUNT("grid") FROM "250cc_classification" WHERE "time_retired"='+1:21.239' AND "laps">25;