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

Question: How many years did Barclay Nordica Arrows BMW enter with Cosworth v8 engine?
SQL: SELECT SUM("year") FROM "complete_formula_one_world_championship_" WHERE "entrant"='barclay nordica arrows bmw' AND "engine"='cosworth v8';

Question: How many years did barclay nordica arrows bmw enter with a bmw str-4 t/c engine with less than 1 point?
SQL: SELECT SUM("year") FROM "complete_formula_one_world_championship_" WHERE "engine"='bmw str-4 t/c' AND "entrant"='barclay nordica arrows bmw' AND "points"<1;

Question: How many years was ensign n180b a Chassis with 4 points?
SQL: SELECT SUM("year") FROM "complete_formula_one_world_championship_" WHERE "points"=4 AND "chassis"='ensign n180b';