CREATE TABLE "classification" (
  "driver" text,
  "constructor" text,
  "laps" real,
  "time_retired" text,
  "grid" real
);

Question: How many laps did Innes Ireland make when he had a grid more than 15?
SQL: SELECT "laps" FROM "classification" WHERE "grid">15 AND "driver"='innes ireland';

Question: What is the grid for Jack Brabham with more than 65 laps?
SQL: SELECT SUM("grid") FROM "classification" WHERE "driver"='jack brabham' AND "laps">65;

Question: Who drove grid 5?
SQL: SELECT "driver" FROM "classification" WHERE "grid"=5;