What is the earliest year with an entry from Rotary Watches Stanley BRM and a BRM P207 with more than 0 points?
CREATE TABLE "complete_formula_one_world_championship_" (
  "year" real,
  "entrant" text,
  "chassis" text,
  "engine" text,
  "points" real
);
SELECT MIN("year") FROM "complete_formula_one_world_championship_" WHERE "entrant"='rotary watches stanley brm' AND "chassis"='brm p207' AND "points">0;