What is the low lap total for minardi - motori moderni, and a Grid smaller than 18?
CREATE TABLE "classification" (
  "driver" text,
  "constructor" text,
  "laps" real,
  "time_retired" text,
  "grid" real
);
SELECT MIN("laps") FROM "classification" WHERE "constructor"='minardi - motori moderni' AND "grid"<18;