CREATE TABLE "complete_formula_one_results" (
  "year" real,
  "entrant" text,
  "chassis" text,
  "engine" text,
  "points" real
);

Question: What is the chassis after 1991?
SQL: SELECT "chassis" FROM "complete_formula_one_results" WHERE "year">1991;

Question: What are the average points after 1992?
SQL: SELECT AVG("points") FROM "complete_formula_one_results" WHERE "year">1992;

Question: What is the sum of points in 1991, for footwork a11c chassis?
SQL: SELECT SUM("points") FROM "complete_formula_one_results" WHERE "year"=1991 AND "chassis"='footwork a11c';