how many points are there for a Chassis of porsche 718, and a Year smaller than 1964?
CREATE TABLE "world_championship_results" (
  "year" real,
  "entrant" text,
  "chassis" text,
  "engine" text,
  "points" real
);
SELECT COUNT("points") FROM "world_championship_results" WHERE "chassis"='porsche 718' AND "year"<1964;