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

Question: Who is entered earlier than 1975 and has a Lotus 20 chassis?
SQL: SELECT "entrant" FROM "complete_formula_one_world_championship_" WHERE "year"<1975 AND "chassis"='lotus 20';

Question: Which engine has a Lotus 49c chassis?
SQL: SELECT "engine" FROM "complete_formula_one_world_championship_" WHERE "chassis"='lotus 49c';

Question: What are the average points of Scuderia Scribante with a Brabham bt11 chassis before 1968?
SQL: SELECT AVG("points") FROM "complete_formula_one_world_championship_" WHERE "entrant"='scuderia scribante' AND "chassis"='brabham bt11' AND "year"<1968;

Question: How many points are there for a Mclaren m23 chassis later than 1972?
SQL: SELECT COUNT("points") FROM "complete_formula_one_world_championship_" WHERE "year">1972 AND "chassis"='mclaren m23';