How many years did barclay nordica arrows bmw enter with a bmw str-4 t/c engine with less than 1 point?
CREATE TABLE "complete_formula_one_world_championship_" (
  "year" real,
  "entrant" text,
  "chassis" text,
  "engine" text,
  "points" real
);
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;