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

Question: What is the grid total for ralf schumacher racing over 53 laps?
SQL: SELECT SUM("grid") FROM "classification" WHERE "driver"='ralf schumacher' AND "laps">53;

Question: Who built the car that went 53 laps with a Time/Retired of 1:17:09.672?
SQL: SELECT "constructor" FROM "classification" WHERE "laps"=53 AND "time_retired"='1:17:09.672';

Question: What is the high lap total for pedro diniz?
SQL: SELECT MAX("laps") FROM "classification" WHERE "driver"='pedro diniz';