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

Question: Tell me the constructor for grid of 8
SQL: SELECT "constructor" FROM "race" WHERE "grid"=8;

Question: I want the total number of Grids for heinz-harald frentzen
SQL: SELECT COUNT("grid") FROM "race" WHERE "driver"='heinz-harald frentzen';