How many laps with a grid larger than 7 did a Lotus - Ford do with a Time/Retired of + 2 laps?
CREATE TABLE "classification" (
  "driver" text,
  "constructor" text,
  "laps" real,
  "time_retired" text,
  "grid" real
);
SELECT SUM("laps") FROM "classification" WHERE "grid">7 AND "constructor"='lotus - ford' AND "time_retired"='+ 2 laps';